18442022616 has 48 divisors (see below), whose sum is σ = 50200722000. Its totient is φ = 6116131392.

The previous prime is 18442022597. The next prime is 18442022639. The reversal of 18442022616 is 61622024481.

18442022616 is a `hidden beast` number, since 1 + 8 + 4 + 420 + 226 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635916 + ... + 664283.

It is an arithmetic number, because the mean of its divisors is an integer number (1045848375).

Almost surely, 2^18442022616 is an apocalyptic number.

It is an amenable number.

18442022616 is an abundant number, since it is smaller than the sum of its proper divisors (31758699384).

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

18442022616 is a wasteful number, since it uses less digits than its factorization.

18442022616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300408 (or 1300401 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 18442022616 in words is "eighteen billion, four hundred forty-two million, twenty-two thousand, six hundred sixteen".