15809490168 has 32 divisors (see below), whose sum is σ = 39527019600. Its totient is φ = 5269390848.

The previous prime is 15809490163. The next prime is 15809490173. The reversal of 15809490168 is 86109490851.

It is an interprime number because it is at equal distance from previous prime (15809490163) and next prime (15809490173).

It is a self number, because there is not a number n which added to its sum of digits gives 15809490168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15809490163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 406518 + ... + 443706.

Almost surely, 2^15809490168 is an apocalyptic number.

It is an amenable number.

15809490168 is an abundant number, since it is smaller than the sum of its proper divisors (23717529432).

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

15809490168 is a wasteful number, since it uses less digits than its factorization.

15809490168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54911 (or 54907 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 15809490168 in words is "fifteen billion, eight hundred nine million, four hundred ninety thousand, one hundred sixty-eight".