18794941920 has 144 divisors (see below), whose sum is σ = 66513348720. Its totient is φ = 5011974144.

The previous prime is 18794941877. The next prime is 18794941943. The reversal of 18794941920 is 2914949781.

18794941920 is a `hidden beast` number, since 187 + 9 + 49 + 419 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202825 + ... + 280584.

It is an arithmetic number, because the mean of its divisors is an integer number (461898255).

Almost surely, 2^18794941920 is an apocalyptic number.

18794941920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18794941920 is an abundant number, since it is smaller than the sum of its proper divisors (47718406800).

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

18794941920 is an equidigital number, since it uses as much as digits as its factorization.

18794941920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483439 (or 483419 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 18794941920 in words is "eighteen billion, seven hundred ninety-four million, nine hundred forty-one thousand, nine hundred twenty".