18222154 has 8 divisors (see below), whose sum is σ = 27575460. Its totient is φ = 9030336.

The previous prime is 18222151. The next prime is 18222157. The reversal of 18222154 is 45122281.

It is an interprime number because it is at equal distance from previous prime (18222151) and next prime (18222157).

It can be written as a sum of positive squares in 2 ways, for example, as 16621929 + 1600225 = 4077^2 + 1265^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18222151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40089 + ... + 40540.

Almost surely, 2^18222154 is an apocalyptic number.

18222154 is a deficient number, since it is larger than the sum of its proper divisors (9353306).

18222154 is a wasteful number, since it uses less digits than its factorization.

18222154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80744.

The product of its digits is 1280, while the sum is 25.

The square root of 18222154 is about 4268.7415007236. The cubic root of 18222154 is about 263.1478973648.

The spelling of 18222154 in words is "eighteen million, two hundred twenty-two thousand, one hundred fifty-four".