18360049320 has 48 divisors (see below), whose sum is σ = 59670161460. Its totient is φ = 4896013056.

The previous prime is 18360049319. The next prime is 18360049327. The reversal of 18360049320 is 2394006381.

18360049320 is a `hidden beast` number, since 1 + 8 + 3 + 600 + 49 + 3 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18343451844 + 16597476 = 135438^2 + 4074^2 .

It is a super-2 number, since 2×18360049320² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (18360049327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25499709 + ... + 25500428.

Almost surely, 2^18360049320 is an apocalyptic number.

18360049320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18360049320 is an abundant number, since it is smaller than the sum of its proper divisors (41310112140).

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

18360049320 is a wasteful number, since it uses less digits than its factorization.

18360049320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51000154 (or 51000147 counting only the distinct ones).

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

The spelling of 18360049320 in words is "eighteen billion, three hundred sixty million, forty-nine thousand, three hundred twenty".