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18060880394 = 213036930499
BaseRepresentation
bin10000110100100000…
…110010101000001010
31201121200201210020002
4100310200302220022
5243442041133034
612144055203002
71206364643654
oct206440625012
951550653202
1018060880394
117728994837
123600676462
13191aa2819b
14c349576d4
1570a8d1e7e
hex434832a0a

18060880394 has 8 divisors (see below), whose sum is σ = 27112116000. Its totient is φ = 9023508396.

The previous prime is 18060880379. The next prime is 18060880399. The reversal of 18060880394 is 49308806081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18060880399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3462644 + ... + 3467855.

It is an arithmetic number, because the mean of its divisors is an integer number (3389014500).

Almost surely, 218060880394 is an apocalyptic number.

18060880394 is a deficient number, since it is larger than the sum of its proper divisors (9051235606).

18060880394 is a wasteful number, since it uses less digits than its factorization.

18060880394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931804.

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 18060880394 in words is "eighteen billion, sixty million, eight hundred eighty thousand, three hundred ninety-four".

Divisors: 1 2 1303 2606 6930499 13860998 9030440197 18060880394