18526476544 has 81 divisors (see below), whose sum is σ = 37994051361. Its totient is φ = 9016058880.

The previous prime is 18526476541. The next prime is 18526476569. The reversal of 18526476544 is 44567462581.

The square root of 18526476544 is 136112.

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., 204146944 + 18322329600 = 14288^2 + 135360^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18526476491 and 18526476500.

It is not an unprimeable number, because it can be changed into a prime (18526476541) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102356134 + ... + 102356314.

Almost surely, 2^18526476544 is an apocalyptic number.

18526476544 is the 136112-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18526476544

18526476544 is an abundant number, since it is smaller than the sum of its proper divisors (19467574817).

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

18526476544 is an frugal number, since it uses more digits than its factorization.

18526476544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 230 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 52.

The spelling of 18526476544 in words is "eighteen billion, five hundred twenty-six million, four hundred seventy-six thousand, five hundred forty-four".