16719019 has 2 divisors, whose sum is σ = 16719020. Its totient is φ = 16719018.

The previous prime is 16718987. The next prime is 16719023. The reversal of 16719019 is 91091761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16719019 - 2⁵ = 16718987 is a prime.

It is a super-2 number, since 2×16719019² = 559051192644722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16719029) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8359509 + 8359510.

It is an arithmetic number, because the mean of its divisors is an integer number (8359510).

Almost surely, 2^16719019 is an apocalyptic number.

16719019 is a deficient number, since it is larger than the sum of its proper divisors (1).

16719019 is an equidigital number, since it uses as much as digits as its factorization.

16719019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 16719019 is about 4088.8897025965. The cubic root of 16719019 is about 255.7036518277.

The spelling of 16719019 in words is "sixteen million, seven hundred nineteen thousand, nineteen".