18842679 has 8 divisors (see below), whose sum is σ = 27915120. Its totient is φ = 12561768.

The previous prime is 18842651. The next prime is 18842693. The reversal of 18842679 is 97624881.

It is not a de Polignac number, because 18842679 - 2¹⁷ = 18711607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842639) 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 7 ways as a sum of consecutive naturals, for example, 348912 + ... + 348965.

It is an arithmetic number, because the mean of its divisors is an integer number (3489390).

Almost surely, 2^18842679 is an apocalyptic number.

18842679 is a deficient number, since it is larger than the sum of its proper divisors (9072441).

18842679 is an equidigital number, since it uses as much as digits as its factorization.

18842679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697886 (or 697880 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18842679 is about 4340.8154763823. The cubic root of 18842679 is about 266.1016392258.

The spelling of 18842679 in words is "eighteen million, eight hundred forty-two thousand, six hundred seventy-nine".