18170872879 has 8 divisors (see below), whose sum is σ = 18393270480. Its totient is φ = 17948880576.

The previous prime is 18170872849. The next prime is 18170872961. The reversal of 18170872879 is 97827807181.

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 18170872879 - 2¹⁹ = 18170348591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18170872849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10617 + ... + 190930.

It is an arithmetic number, because the mean of its divisors is an integer number (2299158810).

Almost surely, 2^18170872879 is an apocalyptic number.

18170872879 is a deficient number, since it is larger than the sum of its proper divisors (222397601).

18170872879 is a wasteful number, since it uses less digits than its factorization.

18170872879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202649.

The product of its (nonzero) digits is 3161088, while the sum is 58.

The spelling of 18170872879 in words is "eighteen billion, one hundred seventy million, eight hundred seventy-two thousand, eight hundred seventy-nine".