16873891 has 2 divisors, whose sum is σ = 16873892. Its totient is φ = 16873890.

The previous prime is 16873873. The next prime is 16873897. The reversal of 16873891 is 19837861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16873891 - 2⁹ = 16873379 is a prime.

It is not a weakly prime, because it can be changed into another prime (16873897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436945 + 8436946.

It is an arithmetic number, because the mean of its divisors is an integer number (8436946).

Almost surely, 2^16873891 is an apocalyptic number.

16873891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16873891 is an equidigital number, since it uses as much as digits as its factorization.

16873891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 16873891 is about 4107.7841958896. The cubic root of 16873891 is about 256.4907730241.

The spelling of 16873891 in words is "sixteen million, eight hundred seventy-three thousand, eight hundred ninety-one".