18354422 has 4 divisors (see below), whose sum is σ = 27531636. Its totient is φ = 9177210.

The previous prime is 18354389. The next prime is 18354433. The reversal of 18354422 is 22445381.

It is a happy number.

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

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, 4588604 + ... + 4588607.

It is an arithmetic number, because the mean of its divisors is an integer number (6882909).

Almost surely, 2^18354422 is an apocalyptic number.

18354422 is a deficient number, since it is larger than the sum of its proper divisors (9177214).

18354422 is an equidigital number, since it uses as much as digits as its factorization.

18354422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177213.

The product of its digits is 7680, while the sum is 29.

The square root of 18354422 is about 4284.2061108215. The cubic root of 18354422 is about 263.7830613752.

The spelling of 18354422 in words is "eighteen million, three hundred fifty-four thousand, four hundred twenty-two".