18198153 has 6 divisors (see below), whose sum is σ = 26286234. Its totient is φ = 12132096.

The previous prime is 18198149. The next prime is 18198161. The reversal of 18198153 is 35189181.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 6827769 = 3372^2 + 2613^2 .

It is not a de Polignac number, because 18198153 - 2² = 18198149 is a prime.

It is a super-2 number, since 2×18198153² = 662345545222818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18198053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1011000 + ... + 1011017.

It is an arithmetic number, because the mean of its divisors is an integer number (4381039).

Almost surely, 2^18198153 is an apocalyptic number.

It is an amenable number.

18198153 is a deficient number, since it is larger than the sum of its proper divisors (8088081).

18198153 is a wasteful number, since it uses less digits than its factorization.

18198153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022023 (or 2022020 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 18198153 is about 4265.9293243091. The cubic root of 18198153 is about 263.0323130118.

The spelling of 18198153 in words is "eighteen million, one hundred ninety-eight thousand, one hundred fifty-three".