18436354 has 4 divisors (see below), whose sum is σ = 27654534. Its totient is φ = 9218176.

The previous prime is 18436349. The next prime is 18436367. The reversal of 18436354 is 45363481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45363481 = 251 ⋅180731.

It can be written as a sum of positive squares in only one way, i.e., 17032129 + 1404225 = 4127^2 + 1185^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4609087 + ... + 4609090.

Almost surely, 2^18436354 is an apocalyptic number.

18436354 is a deficient number, since it is larger than the sum of its proper divisors (9218180).

18436354 is an equidigital number, since it uses as much as digits as its factorization.

18436354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218179.

The product of its digits is 34560, while the sum is 34.

The square root of 18436354 is about 4293.7575618565. The cubic root of 18436354 is about 264.1749777405.

The spelling of 18436354 in words is "eighteen million, four hundred thirty-six thousand, three hundred fifty-four".