16397513 has 16 divisors (see below), whose sum is σ = 19127040. Its totient is φ = 13899600.

The previous prime is 16397509. The next prime is 16397519. The reversal of 16397513 is 31579361.

It is not a de Polignac number, because 16397513 - 2² = 16397509 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16397519) 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 15 ways as a sum of consecutive naturals, for example, 13418 + ... + 14588.

It is an arithmetic number, because the mean of its divisors is an integer number (1195440).

Almost surely, 2^16397513 is an apocalyptic number.

It is an amenable number.

16397513 is a deficient number, since it is larger than the sum of its proper divisors (2729527).

16397513 is a wasteful number, since it uses less digits than its factorization.

16397513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268.

The product of its digits is 17010, while the sum is 35.

The square root of 16397513 is about 4049.3842741829. The cubic root of 16397513 is about 254.0539751374.

The spelling of 16397513 in words is "sixteen million, three hundred ninety-seven thousand, five hundred thirteen".