16487819 has 2 divisors, whose sum is σ = 16487820. Its totient is φ = 16487818.

The previous prime is 16487789. The next prime is 16487831. The reversal of 16487819 is 91878461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16487819 - 2²⁰ = 15439243 is a prime.

It is a super-2 number, since 2×16487819² = 543696350753522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16487819.

It is not a weakly prime, because it can be changed into another prime (16487879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8243909 + 8243910.

It is an arithmetic number, because the mean of its divisors is an integer number (8243910).

Almost surely, 2^16487819 is an apocalyptic number.

16487819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16487819 is an equidigital number, since it uses as much as digits as its factorization.

16487819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 16487819 is about 4060.5195480382. The cubic root of 16487819 is about 254.5195052745.

The spelling of 16487819 in words is "sixteen million, four hundred eighty-seven thousand, eight hundred nineteen".