18236546004 has 12 divisors (see below), whose sum is σ = 42551940704. Its totient is φ = 6078848664.

The previous prime is 18236545993. The next prime is 18236546021. The reversal of 18236546004 is 40064563281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18236546004² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759856072 + ... + 759856095.

Almost surely, 2^18236546004 is an apocalyptic number.

It is an amenable number.

18236546004 is an abundant number, since it is smaller than the sum of its proper divisors (24315394700).

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

18236546004 is a wasteful number, since it uses less digits than its factorization.

18236546004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519712174 (or 1519712172 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 18236546004 in words is "eighteen billion, two hundred thirty-six million, five hundred forty-six thousand, four".