16445419 has 2 divisors, whose sum is σ = 16445420. Its totient is φ = 16445418.

The previous prime is 16445399. The next prime is 16445447. The reversal of 16445419 is 91454461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16445419 - 2¹³ = 16437227 is a prime.

It is a super-2 number, since 2×16445419² = 540903612171122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16445449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8222709 + 8222710.

It is an arithmetic number, because the mean of its divisors is an integer number (8222710).

Almost surely, 2^16445419 is an apocalyptic number.

16445419 is a deficient number, since it is larger than the sum of its proper divisors (1).

16445419 is an equidigital number, since it uses as much as digits as its factorization.

16445419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 16445419 is about 4055.2951803784. The cubic root of 16445419 is about 254.3011442564.

The spelling of 16445419 in words is "sixteen million, four hundred forty-five thousand, four hundred nineteen".