18906254924 has 6 divisors (see below), whose sum is σ = 33085946124. Its totient is φ = 9453127460.

The previous prime is 18906254911. The next prime is 18906254987. The reversal of 18906254924 is 42945260981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2363281862 + ... + 2363281869.

It is an arithmetic number, because the mean of its divisors is an integer number (5514324354).

Almost surely, 2^18906254924 is an apocalyptic number.

It is an amenable number.

18906254924 is a deficient number, since it is larger than the sum of its proper divisors (14179691200).

18906254924 is a wasteful number, since it uses less digits than its factorization.

18906254924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726563735 (or 4726563733 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 18906254924 in words is "eighteen billion, nine hundred six million, two hundred fifty-four thousand, nine hundred twenty-four".