18870449122 has 16 divisors (see below), whose sum is σ = 33101652672. Its totient is φ = 7899257520.

The previous prime is 18870449047. The next prime is 18870449189. The reversal of 18870449122 is 22194407881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15672529 + ... + 15673732.

It is an arithmetic number, because the mean of its divisors is an integer number (2068853292).

Almost surely, 2^18870449122 is an apocalyptic number.

18870449122 is a deficient number, since it is larger than the sum of its proper divisors (14231203550).

18870449122 is a wasteful number, since it uses less digits than its factorization.

18870449122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31346313.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 18870449122 in words is "eighteen billion, eight hundred seventy million, four hundred forty-nine thousand, one hundred twenty-two".