18853996012 has 12 divisors (see below), whose sum is σ = 33008615640. Its totient is φ = 9422962976.

The previous prime is 18853995991. The next prime is 18853996019. The reversal of 18853996012 is 21069935881.

It is not an unprimeable number, because it can be changed into a prime (18853996019) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 998233 + ... + 1016944.

It is an arithmetic number, because the mean of its divisors is an integer number (2750717970).

Almost surely, 2^18853996012 is an apocalyptic number.

It is an amenable number.

18853996012 is a deficient number, since it is larger than the sum of its proper divisors (14154619628).

18853996012 is a wasteful number, since it uses less digits than its factorization.

18853996012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017520 (or 2017518 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 18853996012 in words is "eighteen billion, eight hundred fifty-three million, nine hundred ninety-six thousand, twelve".