18198053 has 2 divisors, whose sum is σ = 18198054. Its totient is φ = 18198052.

The previous prime is 18198017. The next prime is 18198091. The reversal of 18198053 is 35089181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10029889 + 8168164 = 3167^2 + 2858^2 .

It is a cyclic number.

It is not a de Polignac number, because 18198053 - 2¹² = 18193957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18198553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9099026 + 9099027.

It is an arithmetic number, because the mean of its divisors is an integer number (9099027).

Almost surely, 2^18198053 is an apocalyptic number.

It is an amenable number.

18198053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18198053 is an equidigital number, since it uses as much as digits as its factorization.

18198053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 18198053 is about 4265.9176035174. The cubic root of 18198053 is about 263.0318312179.

The spelling of 18198053 in words is "eighteen million, one hundred ninety-eight thousand, fifty-three".