18434679 has 4 divisors (see below), whose sum is σ = 24579576. Its totient is φ = 12289784.

The previous prime is 18434671. The next prime is 18434687. The reversal of 18434679 is 97643481.

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

It is an interprime number because it is at equal distance from previous prime (18434671) and next prime (18434687).

It is a cyclic number.

It is not a de Polignac number, because 18434679 - 2³ = 18434671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18434679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434671) 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 3 ways as a sum of consecutive naturals, for example, 3072444 + ... + 3072449.

It is an arithmetic number, because the mean of its divisors is an integer number (6144894).

Almost surely, 2^18434679 is an apocalyptic number.

18434679 is a deficient number, since it is larger than the sum of its proper divisors (6144897).

18434679 is an equidigital number, since it uses as much as digits as its factorization.

18434679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144896.

The product of its digits is 145152, while the sum is 42.

The square root of 18434679 is about 4293.5625068234. The cubic root of 18434679 is about 264.1669771259.

The spelling of 18434679 in words is "eighteen million, four hundred thirty-four thousand, six hundred seventy-nine".