18874957608 has 240 divisors, whose sum is σ = 60487945980. Its totient is φ = 5465346048.

The previous prime is 18874957597. The next prime is 18874957697. The reversal of 18874957608 is 80675947881.

18874957608 is a `hidden beast` number, since 1 + 8 + 87 + 495 + 7 + 60 + 8 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 16931734884 + 1943222724 = 130122^2 + 44082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2430660 + ... + 2438412.

Almost surely, 2^18874957608 is an apocalyptic number.

18874957608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18874957608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30243972990).

18874957608 is an abundant number, since it is smaller than the sum of its proper divisors (41612988372).

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

18874957608 is a wasteful number, since it uses less digits than its factorization.

18874957608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818 (or 7788 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 18874957608 in words is "eighteen billion, eight hundred seventy-four million, nine hundred fifty-seven thousand, six hundred eight".