18237305684 has 48 divisors (see below), whose sum is σ = 35765970240. Its totient is φ = 8082063360.

The previous prime is 18237305657. The next prime is 18237305741. The reversal of 18237305684 is 48650373281.

It is a super-2 number, since 2×18237305684² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62804 + ... + 201044.

It is an arithmetic number, because the mean of its divisors is an integer number (745124380).

Almost surely, 2^18237305684 is an apocalyptic number.

It is an amenable number.

18237305684 is a deficient number, since it is larger than the sum of its proper divisors (17528664556).

18237305684 is a wasteful number, since it uses less digits than its factorization.

18237305684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138360 (or 138358 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 18237305684 in words is "eighteen billion, two hundred thirty-seven million, three hundred five thousand, six hundred eighty-four".