18421110946 has 32 divisors (see below), whose sum is σ = 31780944000. Its totient is φ = 7844432256.

The previous prime is 18421110913. The next prime is 18421110973. The reversal of 18421110946 is 64901112481.

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, 1622080 + ... + 1633396.

It is an arithmetic number, because the mean of its divisors is an integer number (993154500).

Almost surely, 2^18421110946 is an apocalyptic number.

18421110946 is a deficient number, since it is larger than the sum of its proper divisors (13359833054).

18421110946 is a wasteful number, since it uses less digits than its factorization.

18421110946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12058.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 18421110946 in words is "eighteen billion, four hundred twenty-one million, one hundred ten thousand, nine hundred forty-six".