165929397 has 16 divisors (see below), whose sum is σ = 223292160. Its totient is φ = 109598400.

The previous prime is 165929381. The next prime is 165929399. The reversal of 165929397 is 793929561.

It is a happy number.

It is not a de Polignac number, because 165929397 - 2⁴ = 165929381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165929399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233679 + ... + 234387.

It is an arithmetic number, because the mean of its divisors is an integer number (13955760).

Almost surely, 2^165929397 is an apocalyptic number.

It is an amenable number.

165929397 is a deficient number, since it is larger than the sum of its proper divisors (57362763).

165929397 is a wasteful number, since it uses less digits than its factorization.

165929397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its digits is 918540, while the sum is 51.

The square root of 165929397 is about 12881.3585075488. The cubic root of 165929397 is about 549.5085383876.

The spelling of 165929397 in words is "one hundred sixty-five million, nine hundred twenty-nine thousand, three hundred ninety-seven".