165903333 has 16 divisors (see below), whose sum is σ = 223431936. Its totient is φ = 109494720.

The previous prime is 165903319. The next prime is 165903349. The reversal of 165903333 is 333309561.

It is not a de Polignac number, because 165903333 - 2⁴ = 165903317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165903294 and 165903303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165903433) 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, 149860 + ... + 150962.

It is an arithmetic number, because the mean of its divisors is an integer number (13964496).

Almost surely, 2^165903333 is an apocalyptic number.

It is an amenable number.

165903333 is a deficient number, since it is larger than the sum of its proper divisors (57528603).

165903333 is a wasteful number, since it uses less digits than its factorization.

165903333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 21870, while the sum is 33.

The square root of 165903333 is about 12880.3467732822. The cubic root of 165903333 is about 549.4797648233.

The spelling of 165903333 in words is "one hundred sixty-five million, nine hundred three thousand, three hundred thirty-three".