16013891 has 2 divisors, whose sum is σ = 16013892. Its totient is φ = 16013890.

The previous prime is 16013873. The next prime is 16013917. The reversal of 16013891 is 19831061.

It is a happy number.

16013891 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 a de Polignac number, because none of the positive numbers 2^k-16013891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16013801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8006945 + 8006946.

It is an arithmetic number, because the mean of its divisors is an integer number (8006946).

Almost surely, 2^16013891 is an apocalyptic number.

16013891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16013891 is an equidigital number, since it uses as much as digits as its factorization.

16013891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 16013891 is about 4001.7359982887. The cubic root of 16013891 is about 252.0571120659.

The spelling of 16013891 in words is "sixteen million, thirteen thousand, eight hundred ninety-one".