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19069545384 = 2332264854797
BaseRepresentation
bin10001110000101000…
…100010101110101000
31211012222201021110200
4101300220202232220
5303023300423014
612432130312200
71243363314141
oct216050425650
954188637420
1019069545384
1180a629676a
123842428660
131a4b9aa386
14ccc8bcac8
15769225a09
hex470a22ba8

19069545384 has 24 divisors (see below), whose sum is σ = 51646685610. Its totient is φ = 6356515104.

The previous prime is 19069545361. The next prime is 19069545401. The reversal of 19069545384 is 48354596091.

19069545384 is a `hidden beast` number, since 1 + 9 + 0 + 69 + 545 + 38 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14277860100 + 4791685284 = 119490^2 + 69222^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×190695453842 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19069545384.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132427327 + ... + 132427470.

Almost surely, 219069545384 is an apocalyptic number.

It is an amenable number.

19069545384 is an abundant number, since it is smaller than the sum of its proper divisors (32577140226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19069545384 is a wasteful number, since it uses less digits than its factorization.

19069545384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264854809 (or 264854802 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

It can be divided in two parts, 19069 and 545384, that added together give a triangular number (564453 = T1062).

The spelling of 19069545384 in words is "nineteen billion, sixty-nine million, five hundred forty-five thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 264854797 529709594 794564391 1059419188 1589128782 2118838376 2383693173 3178257564 4767386346 6356515128 9534772692 19069545384