18084879 has 12 divisors (see below), whose sum is σ = 26219232. Its totient is φ = 12012000.

The previous prime is 18084851. The next prime is 18084919. The reversal of 18084879 is 97848081.

18084879 = 552² + 553² + ... + 605².

It is not a de Polignac number, because 18084879 - 2¹⁶ = 18019343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18084779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1047 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (2184936).

Almost surely, 2^18084879 is an apocalyptic number.

18084879 is a deficient number, since it is larger than the sum of its proper divisors (8134353).

18084879 is a wasteful number, since it uses less digits than its factorization.

18084879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438 (or 7435 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 18084879 is about 4252.6320085331. The cubic root of 18084879 is about 262.4854304839.

The spelling of 18084879 in words is "eighteen million, eighty-four thousand, eight hundred seventy-nine".