165073797 has 18 divisors (see below), whose sum is σ = 277369638. Its totient is φ = 94327632.

The previous prime is 165073781. The next prime is 165073801. The reversal of 165073797 is 797370561.

It can be written as a sum of positive squares in only one way, i.e., 109809441 + 55264356 = 10479^2 + 7434^2 .

It is not a de Polignac number, because 165073797 - 2⁴ = 165073781 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165073717) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 186718 + ... + 187599.

Almost surely, 2^165073797 is an apocalyptic number.

It is an amenable number.

165073797 is a deficient number, since it is larger than the sum of its proper divisors (112295841).

165073797 is a wasteful number, since it uses less digits than its factorization.

165073797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374337 (or 374327 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 45.

The square root of 165073797 is about 12848.1048018764. The cubic root of 165073797 is about 548.5624132110.

The spelling of 165073797 in words is "one hundred sixty-five million, seventy-three thousand, seven hundred ninety-seven".