18907590940 has 24 divisors (see below), whose sum is σ = 45378218592. Its totient is φ = 6482602560.

The previous prime is 18907590929. The next prime is 18907590967. The reversal of 18907590940 is 4909570981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67526971 + ... + 67527250.

It is an arithmetic number, because the mean of its divisors is an integer number (1890759108).

Almost surely, 2^18907590940 is an apocalyptic number.

18907590940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18907590940 is an abundant number, since it is smaller than the sum of its proper divisors (26470627652).

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

18907590940 is a wasteful number, since it uses less digits than its factorization.

18907590940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135054237 (or 135054235 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 52.

The spelling of 18907590940 in words is "eighteen billion, nine hundred seven million, five hundred ninety thousand, nine hundred forty".