18287568628 has 24 divisors (see below), whose sum is σ = 38500145600. Its totient is φ = 7425027648.

The previous prime is 18287568623. The next prime is 18287568641. The reversal of 18287568628 is 82686578281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18287568623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17187033 + ... + 17188096.

Almost surely, 2^18287568628 is an apocalyptic number.

It is an amenable number.

18287568628 is an abundant number, since it is smaller than the sum of its proper divisors (20212576972).

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

18287568628 is a wasteful number, since it uses less digits than its factorization.

18287568628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34375159 (or 34375157 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 61.

The spelling of 18287568628 in words is "eighteen billion, two hundred eighty-seven million, five hundred sixty-eight thousand, six hundred twenty-eight".