18410489 has 2 divisors, whose sum is σ = 18410490. Its totient is φ = 18410488.

The previous prime is 18410467. The next prime is 18410501. The reversal of 18410489 is 98401481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 8456464 = 3155^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 18410489 - 2⁸ = 18410233 is a prime.

It is a super-2 number, since 2×18410489² = 677892210438242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18410429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9205244 + 9205245.

It is an arithmetic number, because the mean of its divisors is an integer number (9205245).

Almost surely, 2^18410489 is an apocalyptic number.

It is an amenable number.

18410489 is a deficient number, since it is larger than the sum of its proper divisors (1).

18410489 is an equidigital number, since it uses as much as digits as its factorization.

18410489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18410489 is about 4290.7445740804. The cubic root of 18410489 is about 264.0513798452.

The spelling of 18410489 in words is "eighteen million, four hundred ten thousand, four hundred eighty-nine".