18922298 has 4 divisors (see below), whose sum is σ = 28383450. Its totient is φ = 9461148.

The previous prime is 18922289. The next prime is 18922301. The reversal of 18922298 is 89222981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89222981 = 863 ⋅103387.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 2866249 = 4007^2 + 1693^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4730573 + ... + 4730576.

Almost surely, 2^18922298 is an apocalyptic number.

18922298 is a deficient number, since it is larger than the sum of its proper divisors (9461152).

18922298 is an equidigital number, since it uses as much as digits as its factorization.

18922298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461151.

The product of its digits is 41472, while the sum is 41.

The square root of 18922298 is about 4349.9767815472. The cubic root of 18922298 is about 266.4759132345.

The spelling of 18922298 in words is "eighteen million, nine hundred twenty-two thousand, two hundred ninety-eight".