16894919 has 2 divisors, whose sum is σ = 16894920. Its totient is φ = 16894918.

The previous prime is 16894879. The next prime is 16894931. The reversal of 16894919 is 91949861.

It is a strong prime.

It is an emirp because it is prime and its reverse (91949861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16894919 - 2²⁴ = 117703 is a prime.

It is a super-2 number, since 2×16894919² = 570876576033122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16294919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8447459 + 8447460.

It is an arithmetic number, because the mean of its divisors is an integer number (8447460).

Almost surely, 2^16894919 is an apocalyptic number.

16894919 is a deficient number, since it is larger than the sum of its proper divisors (1).

16894919 is an equidigital number, since it uses as much as digits as its factorization.

16894919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 47.

The square root of 16894919 is about 4110.3429297323. The cubic root of 16894919 is about 256.5972738325.

The spelling of 16894919 in words is "sixteen million, eight hundred ninety-four thousand, nine hundred nineteen".