18630612036 has 45 divisors (see below), whose sum is σ = 48710523631. Its totient is φ = 6209385048.

The previous prime is 18630612031. The next prime is 18630612043. The reversal of 18630612036 is 63021603681.

The square root of 18630612036 is 136494.

It is a perfect power (a square), and thus also a powerful number.

18630612036 is a `hidden beast` number, since 1 + 8 + 6 + 3 + 0 + 612 + 0 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18630612031) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2453101 + ... + 2460683.

Almost surely, 2^18630612036 is an apocalyptic number.

18630612036 is the 136494-th square number.

It is an amenable number.

18630612036 is an abundant number, since it is smaller than the sum of its proper divisors (30079911595).

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

18630612036 is an frugal number, since it uses more digits than its factorization.

18630612036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15182 (or 7588 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Multiplying 18630612036 by its sum of digits (36), we get a square (670702033296 = 818964²).

18630612036 divided by its sum of digits (36) gives a square (517517001 = 22749²).

The spelling of 18630612036 in words is "eighteen billion, six hundred thirty million, six hundred twelve thousand, thirty-six".