165432357 has 6 divisors (see below), whose sum is σ = 238957862. Its totient is φ = 110288232.

The previous prime is 165432349. The next prime is 165432383. The reversal of 165432357 is 753234561.

It can be written as a sum of positive squares in only one way, i.e., 164711556 + 720801 = 12834^2 + 849^2 .

It is not a de Polignac number, because 165432357 - 2³ = 165432349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165432347) 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 5 ways as a sum of consecutive naturals, for example, 9190678 + ... + 9190695.

Almost surely, 2^165432357 is an apocalyptic number.

It is an amenable number.

165432357 is a deficient number, since it is larger than the sum of its proper divisors (73525505).

165432357 is a wasteful number, since it uses less digits than its factorization.

165432357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18381379 (or 18381376 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 165432357 is about 12862.0510417274. The cubic root of 165432357 is about 548.9593070060.

The spelling of 165432357 in words is "one hundred sixty-five million, four hundred thirty-two thousand, three hundred fifty-seven".