18452641 has 2 divisors, whose sum is σ = 18452642. Its totient is φ = 18452640.

The previous prime is 18452627. The next prime is 18452669. The reversal of 18452641 is 14625481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 1147041 = 4160^2 + 1071^2 .

It is a cyclic number.

It is not a de Polignac number, because 18452641 - 2⁷ = 18452513 is a prime.

It is not a weakly prime, because it can be changed into another prime (18458641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9226320 + 9226321.

It is an arithmetic number, because the mean of its divisors is an integer number (9226321).

Almost surely, 2^18452641 is an apocalyptic number.

It is an amenable number.

18452641 is a deficient number, since it is larger than the sum of its proper divisors (1).

18452641 is an equidigital number, since it uses as much as digits as its factorization.

18452641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 18452641 is about 4295.6537337174. The cubic root of 18452641 is about 264.2527471209.

It can be divided in two parts, 184 and 52641, that added together give a palindrome (52825).

The spelling of 18452641 in words is "eighteen million, four hundred fifty-two thousand, six hundred forty-one".