18166960895 has 8 divisors (see below), whose sum is σ = 22748194656. Its totient is φ = 13901674336.

The previous prime is 18166960871. The next prime is 18166960913. The reversal of 18166960895 is 59806966181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18166960895 - 2¹⁴ = 18166944511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78986672 + ... + 78986901.

It is an arithmetic number, because the mean of its divisors is an integer number (2843524332).

Almost surely, 2^18166960895 is an apocalyptic number.

18166960895 is a deficient number, since it is larger than the sum of its proper divisors (4581233761).

18166960895 is a wasteful number, since it uses less digits than its factorization.

18166960895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157973601.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The spelling of 18166960895 in words is "eighteen billion, one hundred sixty-six million, nine hundred sixty thousand, eight hundred ninety-five".