18387692340 has 96 divisors (see below), whose sum is σ = 51843407616. Its totient is φ = 4869427200.

The previous prime is 18387692329. The next prime is 18387692357. The reversal of 18387692340 is 4329678381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5568690 + ... + 5571990.

It is an arithmetic number, because the mean of its divisors is an integer number (540035496).

Almost surely, 2^18387692340 is an apocalyptic number.

18387692340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18387692340 is an abundant number, since it is smaller than the sum of its proper divisors (33455715276).

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

18387692340 is a wasteful number, since it uses less digits than its factorization.

18387692340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 18387692340 in words is "eighteen billion, three hundred eighty-seven million, six hundred ninety-two thousand, three hundred forty".