5637819906 has 24 divisors (see below), whose sum is σ = 12229630140. Its totient is φ = 1877065056.

The previous prime is 5637819893. The next prime is 5637819937. The reversal of 5637819906 is 6099187365.

5637819906 is a `hidden beast` number, since 563 + 78 + 1 + 9 + 9 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5524205625 + 113614281 = 74325^2 + 10659^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168241 + ... + 198948.

Almost surely, 2^5637819906 is an apocalyptic number.

5637819906 is an abundant number, since it is smaller than the sum of its proper divisors (6591810234).

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

5637819906 is a wasteful number, since it uses less digits than its factorization.

5637819906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368050 (or 368047 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 5637819906 is about 75085.4173991195. The cubic root of 5637819906 is about 1779.7967097297.

The spelling of 5637819906 in words is "five billion, six hundred thirty-seven million, eight hundred nineteen thousand, nine hundred six".