18087790960 has 40 divisors (see below), whose sum is σ = 42095493216. Its totient is φ = 7227997440.

The previous prime is 18087790957. The next prime is 18087790979. The reversal of 18087790960 is 6909778081.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29044 + ... + 192403.

Almost surely, 2^18087790960 is an apocalyptic number.

18087790960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18087790960 is an abundant number, since it is smaller than the sum of its proper divisors (24007702256).

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

18087790960 is a wasteful number, since it uses less digits than its factorization.

18087790960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222481 (or 222475 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 18087790960 in words is "eighteen billion, eighty-seven million, seven hundred ninety thousand, nine hundred sixty".