16815349674 has 24 divisors (see below), whose sum is σ = 36451293060. Its totient is φ = 5602341888.

The previous prime is 16815349643. The next prime is 16815349787. The reversal of 16815349674 is 47694351861.

16815349674 is a `hidden beast` number, since 1 + 6 + 81 + 5 + 3 + 496 + 74 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16583000625 + 232349049 = 128775^2 + 15243^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16815349674.

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, 193687 + ... + 266730.

Almost surely, 2^16815349674 is an apocalyptic number.

16815349674 is an abundant number, since it is smaller than the sum of its proper divisors (19635943386).

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

16815349674 is a wasteful number, since it uses less digits than its factorization.

16815349674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462454 (or 462451 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 16815349674 in words is "sixteen billion, eight hundred fifteen million, three hundred forty-nine thousand, six hundred seventy-four".