18456852736 has 81 divisors (see below), whose sum is σ = 42891925041. Its totient is φ = 7903558656.

The previous prime is 18456852703. The next prime is 18456852749. The reversal of 18456852736 is 63725865481.

It is a happy number.

The square root of 18456852736 is 135856.

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., 752953600 + 17703899136 = 27440^2 + 133056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15215266 + ... + 15216478.

Almost surely, 2^18456852736 is an apocalyptic number.

18456852736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18456852736 is the 135856-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18456852736

18456852736 is an abundant number, since it is smaller than the sum of its proper divisors (24435072305).

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

18456852736 is an frugal number, since it uses more digits than its factorization.

18456852736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456 (or 1222 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 18456852736 in words is "eighteen billion, four hundred fifty-six million, eight hundred fifty-two thousand, seven hundred thirty-six".