18450063387 has 128 divisors (see below), whose sum is σ = 33354547200. Its totient is φ = 9853062912.

The previous prime is 18450063371. The next prime is 18450063397. The reversal of 18450063387 is 78336005481.

18450063387 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 0 + 0 + 633 + 8 + 7 = 666.

It is not a de Polignac number, because 18450063387 - 2⁴ = 18450063371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18450063397) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 39848718 + ... + 39849180.

It is an arithmetic number, because the mean of its divisors is an integer number (260582400).

Almost surely, 2^18450063387 is an apocalyptic number.

18450063387 is a deficient number, since it is larger than the sum of its proper divisors (14904483813).

18450063387 is a wasteful number, since it uses less digits than its factorization.

18450063387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 18450063387 in words is "eighteen billion, four hundred fifty million, sixty-three thousand, three hundred eighty-seven".