18822070628 has 12 divisors (see below), whose sum is σ = 32946333420. Its totient is φ = 9408832512.

The previous prime is 18822070549. The next prime is 18822070633. The reversal of 18822070628 is 82607022881.

It can be written as a sum of positive squares in 2 ways, for example, as 14065485604 + 4756585024 = 118598^2 + 68968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531401 + ... + 565712.

It is an arithmetic number, because the mean of its divisors is an integer number (2745527785).

Almost surely, 2^18822070628 is an apocalyptic number.

It is an amenable number.

18822070628 is a deficient number, since it is larger than the sum of its proper divisors (14124262792).

18822070628 is a wasteful number, since it uses less digits than its factorization.

18822070628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101406 (or 1101404 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 18822070628 in words is "eighteen billion, eight hundred twenty-two million, seventy thousand, six hundred twenty-eight".