18436969024 has 14 divisors (see below), whose sum is σ = 36585860534. Its totient is φ = 9218484480.

The previous prime is 18436969009. The next prime is 18436969043. The reversal of 18436969024 is 42096963481.

It can be written as a sum of positive squares in only one way, i.e., 16375809024 + 2061160000 = 127968^2 + 45400^2 .

It is a super-3 number, since 3×18436969024³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144038757 + ... + 144038884.

Almost surely, 2^18436969024 is an apocalyptic number.

It is an amenable number.

18436969024 is a deficient number, since it is larger than the sum of its proper divisors (18148891510).

18436969024 is an equidigital number, since it uses as much as digits as its factorization.

18436969024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288077653 (or 288077643 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 18436969024 in words is "eighteen billion, four hundred thirty-six million, nine hundred sixty-nine thousand, twenty-four".