16165897 has 4 divisors (see below), whose sum is σ = 17635536. Its totient is φ = 14696260.

The previous prime is 16165889. The next prime is 16165907. The reversal of 16165897 is 79856161.

It is a happy number.

16165897 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.

It is a cyclic number.

It is not a de Polignac number, because 16165897 - 2³ = 16165889 is a prime.

It is a super-2 number, since 2×16165897² = 522672451629218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16165817) 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, 734803 + ... + 734824.

It is an arithmetic number, because the mean of its divisors is an integer number (4408884).

Almost surely, 2^16165897 is an apocalyptic number.

It is an amenable number.

16165897 is a deficient number, since it is larger than the sum of its proper divisors (1469639).

16165897 is a wasteful number, since it uses less digits than its factorization.

16165897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469638.

The product of its digits is 90720, while the sum is 43.

The square root of 16165897 is about 4020.6836483364. The cubic root of 16165897 is about 252.8521218655.

The spelling of 16165897 in words is "sixteen million, one hundred sixty-five thousand, eight hundred ninety-seven".