18319875294 has 24 divisors (see below), whose sum is σ = 42621751368. Its totient is φ = 5234250000.

The previous prime is 18319875283. The next prime is 18319875311. The reversal of 18319875294 is 49257891381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31155957 + ... + 31156544.

It is an arithmetic number, because the mean of its divisors is an integer number (1775906307).

Almost surely, 2^18319875294 is an apocalyptic number.

18319875294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18319875294 is an abundant number, since it is smaller than the sum of its proper divisors (24301876074).

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

18319875294 is a wasteful number, since it uses less digits than its factorization.

18319875294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62312520 (or 62312513 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The spelling of 18319875294 in words is "eighteen billion, three hundred nineteen million, eight hundred seventy-five thousand, two hundred ninety-four".