18042936976 has 15 divisors (see below), whose sum is σ = 34959231433. Its totient is φ = 9021199840.

The previous prime is 18042936973. The next prime is 18042937001. The reversal of 18042936976 is 67963924081.

The square root of 18042936976 is 134324.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 86936976 + 17956000000 = 9324^2 + 134000^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18042936971) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 520506 + ... + 554086.

Almost surely, 2^18042936976 is an apocalyptic number.

18042936976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18042936976 is the 134324-th square number.

It is an amenable number.

18042936976 is a deficient number, since it is larger than the sum of its proper divisors (16916294457).

18042936976 is an frugal number, since it uses more digits than its factorization.

18042936976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67170 (or 33583 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 18042936976 in words is "eighteen billion, forty-two million, nine hundred thirty-six thousand, nine hundred seventy-six".