18047235600 has 135 divisors (see below), whose sum is σ = 62656904973. Its totient is φ = 4810446720.

The previous prime is 18047235541. The next prime is 18047235611. The reversal of 18047235600 is 653274081.

The square root of 18047235600 is 134340.

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

18047235600 is a `hidden beast` number, since 1 + 8 + 0 + 47 + 2 + 3 + 5 + 600 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6497004816 + 11550230784 = 80604^2 + 107472^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8059281 + ... + 8061519.

Almost surely, 2^18047235600 is an apocalyptic number.

18047235600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18047235600 is the 134340-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18047235600

18047235600 is an abundant number, since it is smaller than the sum of its proper divisors (44609669373).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18047235600 is an equidigital number, since it uses as much as digits as its factorization.

18047235600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Multiplying 18047235600 by its sum of digits (36), we get a square (649700481600 = 806040²).

18047235600 divided by its sum of digits (36) gives a square (501312100 = 22390²).

The spelling of 18047235600 in words is "eighteen billion, forty-seven million, two hundred thirty-five thousand, six hundred".