18416607568 has 20 divisors (see below), whose sum is σ = 35720287540. Its totient is φ = 9198468864.

The previous prime is 18416607563. The next prime is 18416607613. The reversal of 18416607568 is 86570661481.

It can be written as a sum of positive squares in 2 ways, for example, as 355397904 + 18061209664 = 18852^2 + 134392^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18416607563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599223 + ... + 629206.

It is an arithmetic number, because the mean of its divisors is an integer number (1786014377).

Almost surely, 2^18416607568 is an apocalyptic number.

It is an amenable number.

18416607568 is a deficient number, since it is larger than the sum of its proper divisors (17303679972).

18416607568 is a wasteful number, since it uses less digits than its factorization.

18416607568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229374 (or 1229368 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 18416607568 in words is "eighteen billion, four hundred sixteen million, six hundred seven thousand, five hundred sixty-eight".