18892785513 has 32 divisors (see below), whose sum is σ = 29231122432. Its totient is φ = 10630569600.

The previous prime is 18892785493. The next prime is 18892785517. The reversal of 18892785513 is 31558729881.

It is not a de Polignac number, because 18892785513 - 2⁶ = 18892785449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18892785517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957558 + ... + 977088.

It is an arithmetic number, because the mean of its divisors is an integer number (913472576).

Almost surely, 2^18892785513 is an apocalyptic number.

It is an amenable number.

18892785513 is a deficient number, since it is larger than the sum of its proper divisors (10338336919).

18892785513 is a wasteful number, since it uses less digits than its factorization.

18892785513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20245.

The product of its digits is 4838400, while the sum is 57.

The spelling of 18892785513 in words is "eighteen billion, eight hundred ninety-two million, seven hundred eighty-five thousand, five hundred thirteen".