165693373 has 8 divisors (see below), whose sum is σ = 176412600. Its totient is φ = 155082240.

The previous prime is 165693349. The next prime is 165693379. The reversal of 165693373 is 373396561.

It can be written as a sum of positive squares in 4 ways, for example, as 48469444 + 117223929 = 6962^2 + 10827^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165693373 is a prime.

It is a super-2 number, since 2×165693373² = 54908587712234258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165693379) 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, 23848 + ... + 30001.

It is an arithmetic number, because the mean of its divisors is an integer number (22051575).

Almost surely, 2^165693373 is an apocalyptic number.

It is an amenable number.

165693373 is a deficient number, since it is larger than the sum of its proper divisors (10719227).

165693373 is a wasteful number, since it uses less digits than its factorization.

165693373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54047.

The product of its digits is 306180, while the sum is 43.

The square root of 165693373 is about 12872.1937912696. The cubic root of 165693373 is about 549.2478677860.

The spelling of 165693373 in words is "one hundred sixty-five million, six hundred ninety-three thousand, three hundred seventy-three".