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4918988568 = 2331315765989
BaseRepresentation
bin1001001010011000…
…11100111100011000
3110200210221111202210
410211030130330120
540033230113233
62132034555120
7232616466354
oct44514347430
913623844683
104918988568
1120a4705a0a
12b53438aa0
13605136030
14349414464
151dbca3163
hex12531cf18

4918988568 has 32 divisors (see below), whose sum is σ = 13243431600. Its totient is φ = 1513534848.

The previous prime is 4918988567. The next prime is 4918988579. The reversal of 4918988568 is 8658898194.

It is a happy number.

It is a super-2 number, since 2×49189885682 = 48392897064229381248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4918988499 and 4918988508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4918988563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7882683 + ... + 7883306.

Almost surely, 24918988568 is an apocalyptic number.

It is an amenable number.

4918988568 is an abundant number, since it is smaller than the sum of its proper divisors (8324443032).

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

4918988568 is a wasteful number, since it uses less digits than its factorization.

4918988568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15766011 (or 15766007 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 66.

The square root of 4918988568 is about 70135.5014810616. The cubic root of 4918988568 is about 1700.6904424966.

The spelling of 4918988568 in words is "four billion, nine hundred eighteen million, nine hundred eighty-eight thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 15765989 31531978 47297967 63063956 94595934 126127912 189191868 204957857 378383736 409915714 614873571 819831428 1229747142 1639662856 2459494284 4918988568