18834889960 has 64 divisors (see below), whose sum is σ = 44585568720. Its totient is φ = 7151523840.

The previous prime is 18834889939. The next prime is 18834889961. The reversal of 18834889960 is 6998843881.

It can be written as a sum of positive squares in 8 ways, for example, as 12400604164 + 6434285796 = 111358^2 + 80214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18834889892 and 18834889901.

It is not an unprimeable number, because it can be changed into a prime (18834889961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94519 + ... + 215878.

Almost surely, 2^18834889960 is an apocalyptic number.

18834889960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18834889960 is an abundant number, since it is smaller than the sum of its proper divisors (25750678760).

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

18834889960 is a wasteful number, since it uses less digits than its factorization.

18834889960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310486 (or 310482 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 64.

The spelling of 18834889960 in words is "eighteen billion, eight hundred thirty-four million, eight hundred eighty-nine thousand, nine hundred sixty".