18502199922 has 16 divisors (see below), whose sum is σ = 37046413152. Its totient is φ = 6160397760.

The previous prime is 18502199873. The next prime is 18502199923. The reversal of 18502199922 is 22999120581.

It is not an unprimeable number, because it can be changed into a prime (18502199923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1744828 + ... + 1755399.

It is an arithmetic number, because the mean of its divisors is an integer number (2315400822).

Almost surely, 2^18502199922 is an apocalyptic number.

18502199922 is an abundant number, since it is smaller than the sum of its proper divisors (18544213230).

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

18502199922 is a wasteful number, since it uses less digits than its factorization.

18502199922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501113.

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 18502199922 in words is "eighteen billion, five hundred two million, one hundred ninety-nine thousand, nine hundred twenty-two".