18627690990 has 32 divisors (see below), whose sum is σ = 45124283520. Its totient is φ = 4920959264.

The previous prime is 18627690971. The next prime is 18627691111. The reversal of 18627690990 is 9909672681.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18627690990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898300 + ... + 2904719.

It is an arithmetic number, because the mean of its divisors is an integer number (1410133860).

Almost surely, 2^18627690990 is an apocalyptic number.

18627690990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18627690990 is an abundant number, since it is smaller than the sum of its proper divisors (26496592530).

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

18627690990 is a wasteful number, since it uses less digits than its factorization.

18627690990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803136.

The product of its (nonzero) digits is 2939328, while the sum is 57.

The spelling of 18627690990 in words is "eighteen billion, six hundred twenty-seven million, six hundred ninety thousand, nine hundred ninety".