16259491 has 2 divisors, whose sum is σ = 16259492. Its totient is φ = 16259490.

The previous prime is 16259483. The next prime is 16259519. The reversal of 16259491 is 19495261.

16259491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16259491 - 2³ = 16259483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16259491.

It is not a weakly prime, because it can be changed into another prime (16259471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8129745 + 8129746.

It is an arithmetic number, because the mean of its divisors is an integer number (8129746).

Almost surely, 2^16259491 is an apocalyptic number.

16259491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16259491 is an equidigital number, since it uses as much as digits as its factorization.

16259491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 16259491 is about 4032.3059159741. The cubic root of 16259491 is about 253.3391536444.

The spelling of 16259491 in words is "sixteen million, two hundred fifty-nine thousand, four hundred ninety-one".