16319897 has 4 divisors (see below), whose sum is σ = 17803536. Its totient is φ = 14836260.

The previous prime is 16319873. The next prime is 16319909. The reversal of 16319897 is 79891361.

16319897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79891361 = 11 ⋅7262851.

It is a cyclic number.

It is not a de Polignac number, because 16319897 - 2¹⁶ = 16254361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16319827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741803 + ... + 741824.

It is an arithmetic number, because the mean of its divisors is an integer number (4450884).

Almost surely, 2^16319897 is an apocalyptic number.

It is an amenable number.

16319897 is a deficient number, since it is larger than the sum of its proper divisors (1483639).

16319897 is a wasteful number, since it uses less digits than its factorization.

16319897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483638.

The product of its digits is 81648, while the sum is 44.

The square root of 16319897 is about 4039.7892271751. The cubic root of 16319897 is about 253.6524945896.

It can be divided in two parts, 16 and 319897, that added together give a palindrome (319913).

The spelling of 16319897 in words is "sixteen million, three hundred nineteen thousand, eight hundred ninety-seven".