18458488373 has 4 divisors (see below), whose sum is σ = 19878372108. Its totient is φ = 17038604640.

The previous prime is 18458488337. The next prime is 18458488381. The reversal of 18458488373 is 37388485481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37388485481 = 449 ⋅83270569.

It can be written as a sum of positive squares in 2 ways, for example, as 2737591684 + 15720896689 = 52322^2 + 125383^2 .

It is a cyclic number.

It is not a de Polignac number, because 18458488373 - 2¹⁴ = 18458471989 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 (18458482373) 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, 709941848 + ... + 709941873.

It is an arithmetic number, because the mean of its divisors is an integer number (4969593027).

Almost surely, 2^18458488373 is an apocalyptic number.

18458488373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18458488373 is a deficient number, since it is larger than the sum of its proper divisors (1419883735).

18458488373 is a wasteful number, since it uses less digits than its factorization.

18458488373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419883734.

The product of its digits is 20643840, while the sum is 59.

The spelling of 18458488373 in words is "eighteen billion, four hundred fifty-eight million, four hundred eighty-eight thousand, three hundred seventy-three".