18604241 has 2 divisors, whose sum is σ = 18604242. Its totient is φ = 18604240.

The previous prime is 18604231. The next prime is 18604259. The reversal of 18604241 is 14240681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 6150400 = 3529^2 + 2480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18604241 is a prime.

It is a super-2 number, since 2×18604241² = 692235566372162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18604241.

It is not a weakly prime, because it can be changed into another prime (18604231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9302120 + 9302121.

It is an arithmetic number, because the mean of its divisors is an integer number (9302121).

Almost surely, 2^18604241 is an apocalyptic number.

It is an amenable number.

18604241 is a deficient number, since it is larger than the sum of its proper divisors (1).

18604241 is an equidigital number, since it uses as much as digits as its factorization.

18604241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18604241 is about 4313.2633817100. The cubic root of 18604241 is about 264.9744415839.

The spelling of 18604241 in words is "eighteen million, six hundred four thousand, two hundred forty-one".