18265201 has 2 divisors, whose sum is σ = 18265202. Its totient is φ = 18265200.

The previous prime is 18265193. The next prime is 18265211. The reversal of 18265201 is 10256281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 3326976 = 3865^2 + 1824^2 .

It is a cyclic number.

It is not a de Polignac number, because 18265201 - 2³ = 18265193 is a prime.

It is not a weakly prime, because it can be changed into another prime (18265211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9132600 + 9132601.

It is an arithmetic number, because the mean of its divisors is an integer number (9132601).

Almost surely, 2^18265201 is an apocalyptic number.

It is an amenable number.

18265201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18265201 is an equidigital number, since it uses as much as digits as its factorization.

18265201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18265201 is about 4273.7806448155. The cubic root of 18265201 is about 263.3549497112.

The spelling of 18265201 in words is "eighteen million, two hundred sixty-five thousand, two hundred one".