16319465 has 4 divisors (see below), whose sum is σ = 19583364. Its totient is φ = 13055568.

The previous prime is 16319453. The next prime is 16319467. The reversal of 16319465 is 56491361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56491361 = 3943 ⋅14327.

It can be written as a sum of positive squares in 2 ways, for example, as 7722841 + 8596624 = 2779^2 + 2932^2 .

It is a cyclic number.

It is not a de Polignac number, because 16319465 - 2⁸ = 16319209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16319467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631942 + ... + 1631951.

It is an arithmetic number, because the mean of its divisors is an integer number (4895841).

Almost surely, 2^16319465 is an apocalyptic number.

It is an amenable number.

16319465 is a deficient number, since it is larger than the sum of its proper divisors (3263899).

16319465 is an equidigital number, since it uses as much as digits as its factorization.

16319465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263898.

The product of its digits is 19440, while the sum is 35.

The square root of 16319465 is about 4039.7357586852. The cubic root of 16319465 is about 253.6502564455.

The spelling of 16319465 in words is "sixteen million, three hundred nineteen thousand, four hundred sixty-five".