18614458879 has 4 divisors (see below), whose sum is σ = 18629508184. Its totient is φ = 18599409576.

The previous prime is 18614458861. The next prime is 18614458909. The reversal of 18614458879 is 97885441681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97885441681 = 79829 ⋅1226189.

It is a cyclic number.

It is not a de Polignac number, because 18614458879 - 2²¹ = 18612361727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18614458829) 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, 7522797 + ... + 7525270.

It is an arithmetic number, because the mean of its divisors is an integer number (4657377046).

Almost surely, 2^18614458879 is an apocalyptic number.

18614458879 is a deficient number, since it is larger than the sum of its proper divisors (15049305).

18614458879 is a wasteful number, since it uses less digits than its factorization.

18614458879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049304.

The product of its digits is 15482880, while the sum is 61.

The spelling of 18614458879 in words is "eighteen billion, six hundred fourteen million, four hundred fifty-eight thousand, eight hundred seventy-nine".