16495889 has 2 divisors, whose sum is σ = 16495890. Its totient is φ = 16495888.

The previous prime is 16495873. The next prime is 16495901. The reversal of 16495889 is 98859461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 3478225 = 3608^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 16495889 - 2⁴ = 16495873 is a prime.

It is a super-2 number, since 2×16495889² = 544228707800642, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (16495849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8247944 + 8247945.

It is an arithmetic number, because the mean of its divisors is an integer number (8247945).

Almost surely, 2^16495889 is an apocalyptic number.

It is an amenable number.

16495889 is a deficient number, since it is larger than the sum of its proper divisors (1).

16495889 is an equidigital number, since it uses as much as digits as its factorization.

16495889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 50.

The square root of 16495889 is about 4061.5131416752. The cubic root of 16495889 is about 254.5610235491.

The spelling of 16495889 in words is "sixteen million, four hundred ninety-five thousand, eight hundred eighty-nine".