165902233 has 4 divisors (see below), whose sum is σ = 189602560. Its totient is φ = 142201908.

The previous prime is 165902227. The next prime is 165902239. The reversal of 165902233 is 332209561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332209561 = 1453 ⋅228637.

It is an interprime number because it is at equal distance from previous prime (165902227) and next prime (165902239).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165902233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165902195 and 165902204.

It is not an unprimeable number, because it can be changed into a prime (165902239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11850153 + ... + 11850166.

It is an arithmetic number, because the mean of its divisors is an integer number (47400640).

Almost surely, 2^165902233 is an apocalyptic number.

It is an amenable number.

165902233 is a deficient number, since it is larger than the sum of its proper divisors (23700327).

165902233 is an equidigital number, since it uses as much as digits as its factorization.

165902233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23700326.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 165902233 is about 12880.3040724977. The cubic root of 165902233 is about 549.4785504031.

The spelling of 165902233 in words is "one hundred sixty-five million, nine hundred two thousand, two hundred thirty-three".