16489895 has 8 divisors (see below), whose sum is σ = 19910256. Its totient is φ = 13110336.

The previous prime is 16489883. The next prime is 16489927. The reversal of 16489895 is 59898461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16489895 is a prime.

It is a super-2 number, since 2×16489895² = 543833274222050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9302 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (2488782).

Almost surely, 2^16489895 is an apocalyptic number.

16489895 is a deficient number, since it is larger than the sum of its proper divisors (3420361).

16489895 is a wasteful number, since it uses less digits than its factorization.

16489895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20401.

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

The square root of 16489895 is about 4060.7751723039. The cubic root of 16489895 is about 254.5301871061.

The spelling of 16489895 in words is "sixteen million, four hundred eighty-nine thousand, eight hundred ninety-five".