18979085 has 8 divisors (see below), whose sum is σ = 22830336. Its totient is φ = 15146320.

The previous prime is 18979073. The next prime is 18979087. The reversal of 18979085 is 58097981.

It is a happy number.

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

It is not a de Polignac number, because 18979085 - 2¹⁸ = 18716941 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 (18979087) 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, 2249 + ... + 6558.

It is an arithmetic number, because the mean of its divisors is an integer number (2853792).

Almost surely, 2^18979085 is an apocalyptic number.

It is an amenable number.

18979085 is a deficient number, since it is larger than the sum of its proper divisors (3851251).

18979085 is an equidigital number, since it uses as much as digits as its factorization.

18979085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9243.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 18979085 is about 4356.4991679099. The cubic root of 18979085 is about 266.7422173086.

The spelling of 18979085 in words is "eighteen million, nine hundred seventy-nine thousand, eighty-five".