18363674564 has 12 divisors (see below), whose sum is σ = 32170734204. Its totient is φ = 9172036224.

The previous prime is 18363674561. The next prime is 18363674579. The reversal of 18363674564 is 46547636381.

It can be written as a sum of positive squares in 2 ways, for example, as 1463674564 + 16900000000 = 38258^2 + 130000^2 .

It is a super-3 number, since 3×18363674564³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18363674561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2446049 + ... + 2453544.

It is an arithmetic number, because the mean of its divisors is an integer number (2680894517).

Almost surely, 2^18363674564 is an apocalyptic number.

It is an amenable number.

18363674564 is a deficient number, since it is larger than the sum of its proper divisors (13807059640).

18363674564 is a wasteful number, since it uses less digits than its factorization.

18363674564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900534 (or 4900532 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 53.

The spelling of 18363674564 in words is "eighteen billion, three hundred sixty-three million, six hundred seventy-four thousand, five hundred sixty-four".