18606722404 has 24 divisors (see below), whose sum is σ = 32881623768. Its totient is φ = 9212313600.

The previous prime is 18606722383. The next prime is 18606722441. The reversal of 18606722404 is 40422760681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13282101504 + 5324620900 = 115248^2 + 72970^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177412 + ... + 262084.

It is an arithmetic number, because the mean of its divisors is an integer number (1370067657).

Almost surely, 2^18606722404 is an apocalyptic number.

It is an amenable number.

18606722404 is a deficient number, since it is larger than the sum of its proper divisors (14274901364).

18606722404 is a wasteful number, since it uses less digits than its factorization.

18606722404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85215 (or 85213 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 18606722404 in words is "eighteen billion, six hundred six million, seven hundred twenty-two thousand, four hundred four".