18879051 has 4 divisors (see below), whose sum is σ = 25172072. Its totient is φ = 12586032.

The previous prime is 18879037. The next prime is 18879053. The reversal of 18879051 is 15097881.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18879051 - 2⁵ = 18879019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18879053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3146506 + ... + 3146511.

It is an arithmetic number, because the mean of its divisors is an integer number (6293018).

Almost surely, 2^18879051 is an apocalyptic number.

18879051 is a deficient number, since it is larger than the sum of its proper divisors (6293021).

18879051 is an equidigital number, since it uses as much as digits as its factorization.

18879051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293020.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 18879051 is about 4345.0029919437. The cubic root of 18879051 is about 266.2727477313.

The spelling of 18879051 in words is "eighteen million, eight hundred seventy-nine thousand, fifty-one".