18468455 has 4 divisors (see below), whose sum is σ = 22162152. Its totient is φ = 14774760.

The previous prime is 18468431. The next prime is 18468469. The reversal of 18468455 is 55486481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55486481 = 3607 ⋅15383.

It is not a de Polignac number, because 18468455 - 2¹² = 18464359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846841 + ... + 1846850.

It is an arithmetic number, because the mean of its divisors is an integer number (5540538).

Almost surely, 2^18468455 is an apocalyptic number.

18468455 is a deficient number, since it is larger than the sum of its proper divisors (3693697).

18468455 is an equidigital number, since it uses as much as digits as its factorization.

18468455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693696.

The product of its digits is 153600, while the sum is 41.

The square root of 18468455 is about 4297.4940372268. The cubic root of 18468455 is about 264.3282141816.

It can be divided in two parts, 1846 and 8455, that added together give a palindrome (10301).

The spelling of 18468455 in words is "eighteen million, four hundred sixty-eight thousand, four hundred fifty-five".