18487414623 has 4 divisors (see below), whose sum is σ = 24649886168. Its totient is φ = 12324943080.

The previous prime is 18487414597. The next prime is 18487414633. The reversal of 18487414623 is 32641478481.

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

It is not a de Polignac number, because 18487414623 - 2⁹ = 18487414111 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 (18487414633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3081235768 + ... + 3081235773.

It is an arithmetic number, because the mean of its divisors is an integer number (6162471542).

Almost surely, 2^18487414623 is an apocalyptic number.

18487414623 is a deficient number, since it is larger than the sum of its proper divisors (6162471545).

18487414623 is an equidigital number, since it uses as much as digits as its factorization.

18487414623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162471544.

The product of its digits is 1032192, while the sum is 48.

The spelling of 18487414623 in words is "eighteen billion, four hundred eighty-seven million, four hundred fourteen thousand, six hundred twenty-three".