165903373 has 8 divisors (see below), whose sum is σ = 170045568. Its totient is φ = 161786784.

The previous prime is 165903359. The next prime is 165903389. The reversal of 165903373 is 373309561.

It is a happy number.

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

It is not a de Polignac number, because 165903373 - 2²⁵ = 132348941 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 (165933373) 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, 7065 + ... + 19537.

It is an arithmetic number, because the mean of its divisors is an integer number (21255696).

Almost surely, 2^165903373 is an apocalyptic number.

It is an amenable number.

165903373 is a deficient number, since it is larger than the sum of its proper divisors (4142195).

165903373 is a wasteful number, since it uses less digits than its factorization.

165903373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803.

The product of its (nonzero) digits is 51030, while the sum is 37.

The square root of 165903373 is about 12880.3483260353. The cubic root of 165903373 is about 549.4798089839.

The spelling of 165903373 in words is "one hundred sixty-five million, nine hundred three thousand, three hundred seventy-three".