18250541 has 6 divisors (see below), whose sum is σ = 18902442. Its totient is φ = 17620400.

The previous prime is 18250499. The next prime is 18250553. The reversal of 18250541 is 14505281.

It can be written as a sum of positive squares in 3 ways, for example, as 6375625 + 11874916 = 2525^2 + 3446^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18250541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18250541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18250591) 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, 10010 + ... + 11691.

It is an arithmetic number, because the mean of its divisors is an integer number (3150407).

Almost surely, 2^18250541 is an apocalyptic number.

It is an amenable number.

18250541 is a deficient number, since it is larger than the sum of its proper divisors (651901).

18250541 is an equidigital number, since it uses as much as digits as its factorization.

18250541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21759 (or 21730 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 18250541 is about 4272.0651914501. The cubic root of 18250541 is about 263.2844729444.

The spelling of 18250541 in words is "eighteen million, two hundred fifty thousand, five hundred forty-one".