18575420165 has 8 divisors (see below), whose sum is σ = 22291340928. Its totient is φ = 14859778320.

The previous prime is 18575420147. The next prime is 18575420207. The reversal of 18575420165 is 56102457581.

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

It is not a de Polignac number, because 18575420165 - 2²² = 18571225861 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, 127520 + ... + 231110.

It is an arithmetic number, because the mean of its divisors is an integer number (2786417616).

Almost surely, 2^18575420165 is an apocalyptic number.

It is an amenable number.

18575420165 is a deficient number, since it is larger than the sum of its proper divisors (3715920763).

18575420165 is a wasteful number, since it uses less digits than its factorization.

18575420165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139459.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 18575420165 in words is "eighteen billion, five hundred seventy-five million, four hundred twenty thousand, one hundred sixty-five".