18886765159 has 6 divisors (see below), whose sum is σ = 19496805536. Its totient is φ = 18276774180.

The previous prime is 18886765151. The next prime is 18886765193. The reversal of 18886765159 is 95156768881.

It is a happy number.

It is not a de Polignac number, because 18886765159 - 2³ = 18886765151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18886765159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18886765151) 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 5 ways as a sum of consecutive naturals, for example, 752832 + ... + 777514.

Almost surely, 2^18886765159 is an apocalyptic number.

18886765159 is a deficient number, since it is larger than the sum of its proper divisors (610040377).

18886765159 is an frugal number, since it uses more digits than its factorization.

18886765159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49397 (or 24714 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 64.

The spelling of 18886765159 in words is "eighteen billion, eight hundred eighty-six million, seven hundred sixty-five thousand, one hundred fifty-nine".