18975217902 has 32 divisors (see below), whose sum is σ = 39705050880. Its totient is φ = 6034089600.

The previous prime is 18975217883. The next prime is 18975217903. The reversal of 18975217902 is 20971257981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18975217903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129099 + ... + 233702.

It is an arithmetic number, because the mean of its divisors is an integer number (1240782840).

Almost surely, 2^18975217902 is an apocalyptic number.

18975217902 is an abundant number, since it is smaller than the sum of its proper divisors (20729832978).

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

18975217902 is a wasteful number, since it uses less digits than its factorization.

18975217902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363208.

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 18975217902 in words is "eighteen billion, nine hundred seventy-five million, two hundred seventeen thousand, nine hundred two".