18640614730 has 16 divisors (see below), whose sum is σ = 35011937664. Its totient is φ = 7132061200.

The previous prime is 18640614721. The next prime is 18640614737. The reversal of 18640614730 is 3741604681.

It is not an unprimeable number, because it can be changed into a prime (18640614737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40522846 + ... + 40523305.

It is an arithmetic number, because the mean of its divisors is an integer number (2188246104).

Almost surely, 2^18640614730 is an apocalyptic number.

18640614730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18640614730 is a deficient number, since it is larger than the sum of its proper divisors (16371322934).

18640614730 is a wasteful number, since it uses less digits than its factorization.

18640614730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81046181.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 18640614730 in words is "eighteen billion, six hundred forty million, six hundred fourteen thousand, seven hundred thirty".