18604375731841 has 9 divisors (see below), whose sum is σ = 18622504834563. Its totient is φ = 18586264273320.

The previous prime is 18604375731827. The next prime is 18604375731979. The reversal of 18604375731841 is 14813757340681.

The square root of 18604375731841 is 4313279.

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., 17578976467441 + 1025399264400 = 4192729^2 + 1012620^2 .

It is not a de Polignac number, because 18604375731841 - 2³¹ = 18602228248193 is a prime.

It is a super-2 number, since 2×18604375731841² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18604375731041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7716454926 + ... + 7716457336.

Almost surely, 2^{18604375731841} is an apocalyptic number.

18604375731841 is the 4313279-th square number.

18604375731841 is the 2156640-th centered octagonal number.

It is an amenable number.

18604375731841 is a deficient number, since it is larger than the sum of its proper divisors (18129102722).

18604375731841 is an frugal number, since it uses more digits than its factorization.

18604375731841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 18604375731841 in words is "eighteen trillion, six hundred four billion, three hundred seventy-five million, seven hundred thirty-one thousand, eight hundred forty-one".