18898241 has 2 divisors, whose sum is σ = 18898242. Its totient is φ = 18898240.

The previous prime is 18898193. The next prime is 18898261. The reversal of 18898241 is 14289881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17048641 + 1849600 = 4129^2 + 1360^2 .

It is a cyclic number.

It is not a de Polignac number, because 18898241 - 2²² = 14703937 is a prime.

It is not a weakly prime, because it can be changed into another prime (18898261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9449120 + 9449121.

It is an arithmetic number, because the mean of its divisors is an integer number (9449121).

Almost surely, 2^18898241 is an apocalyptic number.

It is an amenable number.

18898241 is a deficient number, since it is larger than the sum of its proper divisors (1).

18898241 is an equidigital number, since it uses as much as digits as its factorization.

18898241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 41.

The square root of 18898241 is about 4347.2107149297. The cubic root of 18898241 is about 266.3629366519.

The spelling of 18898241 in words is "eighteen million, eight hundred ninety-eight thousand, two hundred forty-one".