18379479 has 16 divisors (see below), whose sum is σ = 26092800. Its totient is φ = 11474496.

The previous prime is 18379469. The next prime is 18379523. The reversal of 18379479 is 97497381.

It is not a de Polignac number, because 18379479 - 2⁷ = 18379351 is a prime.

It is a super-2 number, since 2×18379479² = 675610496622882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18379469) 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 15 ways as a sum of consecutive naturals, for example, 3262 + ... + 6884.

It is an arithmetic number, because the mean of its divisors is an integer number (1630800).

Almost surely, 2^18379479 is an apocalyptic number.

18379479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18379479 is a deficient number, since it is larger than the sum of its proper divisors (7713321).

18379479 is a wasteful number, since it uses less digits than its factorization.

18379479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734.

The product of its digits is 381024, while the sum is 48.

The square root of 18379479 is about 4287.1294592069. The cubic root of 18379479 is about 263.9030434825.

The spelling of 18379479 in words is "eighteen million, three hundred seventy-nine thousand, four hundred seventy-nine".