18975369852 has 48 divisors (see below), whose sum is σ = 49234106880. Its totient is φ = 6320147184.

The previous prime is 18975369811. The next prime is 18975369877. The reversal of 18975369852 is 25896357981.

18975369852 is a `hidden beast` number, since 1 + 8 + 9 + 7 + 536 + 98 + 5 + 2 = 666.

It is a super-2 number, since 2×18975369852² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18975369852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70093 + ... + 207035.

It is an arithmetic number, because the mean of its divisors is an integer number (1025710560).

Almost surely, 2^18975369852 is an apocalyptic number.

18975369852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18975369852 is an abundant number, since it is smaller than the sum of its proper divisors (30258737028).

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

18975369852 is a wasteful number, since it uses less digits than its factorization.

18975369852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138239 (or 138231 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 18975369852 in words is "eighteen billion, nine hundred seventy-five million, three hundred sixty-nine thousand, eight hundred fifty-two".