18493056020 has 12 divisors (see below), whose sum is σ = 38835417684. Its totient is φ = 7397222400.

The previous prime is 18493056017. The next prime is 18493056073. The reversal of 18493056020 is 2065039481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2125947664 + 16367108356 = 46108^2 + 127934^2 .

It is a congruent number.

It is an unprimeable number.

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, 462326381 + ... + 462326420.

It is an arithmetic number, because the mean of its divisors is an integer number (3236284807).

Almost surely, 2^18493056020 is an apocalyptic number.

18493056020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18493056020 is an abundant number, since it is smaller than the sum of its proper divisors (20342361664).

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

18493056020 is a wasteful number, since it uses less digits than its factorization.

18493056020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924652810 (or 924652808 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 18493056020 in words is "eighteen billion, four hundred ninety-three million, fifty-six thousand, twenty".