18937914608 has 20 divisors (see below), whose sum is σ = 36697335000. Its totient is φ = 9467634624.

The previous prime is 18937914607. The next prime is 18937914661. The reversal of 18937914608 is 80641973981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18937914607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41066 + ... + 198902.

It is an arithmetic number, because the mean of its divisors is an integer number (1834866750).

Almost surely, 2^18937914608 is an apocalyptic number.

It is an amenable number.

18937914608 is a deficient number, since it is larger than the sum of its proper divisors (17759420392).

18937914608 is a wasteful number, since it uses less digits than its factorization.

18937914608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165344 (or 165338 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 18937914608 in words is "eighteen billion, nine hundred thirty-seven million, nine hundred fourteen thousand, six hundred eight".