18128986396 has 12 divisors (see below), whose sum is σ = 31890109552. Its totient is φ = 9017526528.

The previous prime is 18128986387. The next prime is 18128986397. The reversal of 18128986396 is 69368982181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18128986397) by changing a digit.

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, 11740800 + ... + 11742343.

Almost surely, 2^18128986396 is an apocalyptic number.

It is an amenable number.

18128986396 is a deficient number, since it is larger than the sum of its proper divisors (13761123156).

18128986396 is a wasteful number, since it uses less digits than its factorization.

18128986396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23483340 (or 23483338 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 61.

The spelling of 18128986396 in words is "eighteen billion, one hundred twenty-eight million, nine hundred eighty-six thousand, three hundred ninety-six".