18986097528 has 48 divisors (see below), whose sum is σ = 51459922800. Its totient is φ = 6323869440.

The previous prime is 18986097521. The next prime is 18986097547. The reversal of 18986097528 is 82579068981.

It is a happy number.

18986097528 is a `hidden beast` number, since 18 + 9 + 8 + 6 + 0 + 97 + 528 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18986097521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4993 + ... + 194928.

It is an arithmetic number, because the mean of its divisors is an integer number (1072081725).

Almost surely, 2^18986097528 is an apocalyptic number.

18986097528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18986097528 is an abundant number, since it is smaller than the sum of its proper divisors (32473825272).

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

18986097528 is a wasteful number, since it uses less digits than its factorization.

18986097528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201252 (or 201245 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 18986097528 in words is "eighteen billion, nine hundred eighty-six million, ninety-seven thousand, five hundred twenty-eight".