18514739992 has 16 divisors (see below), whose sum is σ = 39674442960. Its totient is φ = 7934888544.

The previous prime is 18514739989. The next prime is 18514739993. The reversal of 18514739992 is 29993741581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18514739993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165310123 + ... + 165310234.

It is an arithmetic number, because the mean of its divisors is an integer number (2479652685).

Almost surely, 2^18514739992 is an apocalyptic number.

It is an amenable number.

18514739992 is an abundant number, since it is smaller than the sum of its proper divisors (21159702968).

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

18514739992 is a wasteful number, since it uses less digits than its factorization.

18514739992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330620370 (or 330620366 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 58.

The spelling of 18514739992 in words is "eighteen billion, five hundred fourteen million, seven hundred thirty-nine thousand, nine hundred ninety-two".