18256028608 has 28 divisors (see below), whose sum is σ = 36231733480. Its totient is φ = 9126772992.

The previous prime is 18256028603. The next prime is 18256028617. The reversal of 18256028608 is 80682065281.

It is a super-2 number, since 2×18256028608² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18256028603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 616510 + ... + 645442.

Almost surely, 2^18256028608 is an apocalyptic number.

It is an amenable number.

18256028608 is a deficient number, since it is larger than the sum of its proper divisors (17975704872).

18256028608 is an equidigital number, since it uses as much as digits as its factorization.

18256028608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38804 (or 38794 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 18256028608 in words is "eighteen billion, two hundred fifty-six million, twenty-eight thousand, six hundred eight".