18372175936 has 21 divisors (see below), whose sum is σ = 36459438511. Its totient is φ = 9185545792.

The previous prime is 18372175933. The next prime is 18372175949. The reversal of 18372175936 is 63957127381.

The square root of 18372175936 is 135544.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18372175933) 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, 1075881 + ... + 1092823.

Almost surely, 2^18372175936 is an apocalyptic number.

18372175936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18372175936 is the 135544-th square number.

It is an amenable number.

18372175936 is a deficient number, since it is larger than the sum of its proper divisors (18087262575).

18372175936 is an frugal number, since it uses more digits than its factorization.

18372175936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33898 (or 16945 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 52.

The spelling of 18372175936 in words is "eighteen billion, three hundred seventy-two million, one hundred seventy-five thousand, nine hundred thirty-six".