16157969 has 8 divisors (see below), whose sum is σ = 16444008. Its totient is φ = 15874560.

The previous prime is 16157957. The next prime is 16157971. The reversal of 16157969 is 96975161.

It is a happy number.

16157969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1809025 + 14348944 = 1345^2 + 3788^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16157969 - 2¹² = 16153873 is a prime.

It is a super-2 number, since 2×16157969² = 522159924409922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16157929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14699 + ... + 15759.

It is an arithmetic number, because the mean of its divisors is an integer number (2055501).

Almost surely, 2^16157969 is an apocalyptic number.

It is an amenable number.

16157969 is a deficient number, since it is larger than the sum of its proper divisors (286039).

16157969 is a wasteful number, since it uses less digits than its factorization.

16157969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 102060, while the sum is 44.

The square root of 16157969 is about 4019.6976254440. The cubic root of 16157969 is about 252.8107809404.

The spelling of 16157969 in words is "sixteen million, one hundred fifty-seven thousand, nine hundred sixty-nine".