18116170454 has 4 divisors (see below), whose sum is σ = 27174255684. Its totient is φ = 9058085226.

The previous prime is 18116170393. The next prime is 18116170463. The reversal of 18116170454 is 45407161181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45407161181 = 131 ⋅346619551.

It is a super-2 number, since 2×18116170454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4529042612 + ... + 4529042615.

It is an arithmetic number, because the mean of its divisors is an integer number (6793563921).

Almost surely, 2^18116170454 is an apocalyptic number.

18116170454 is a deficient number, since it is larger than the sum of its proper divisors (9058085230).

18116170454 is an equidigital number, since it uses as much as digits as its factorization.

18116170454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058085229.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 18116170454 in words is "eighteen billion, one hundred sixteen million, one hundred seventy thousand, four hundred fifty-four".