165802197 has 16 divisors (see below), whose sum is σ = 243657792. Its totient is φ = 99448320.

The previous prime is 165802177. The next prime is 165802201. The reversal of 165802197 is 791208561.

It is not a de Polignac number, because 165802197 - 2⁸ = 165801941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165802177) 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, 22698 + ... + 29099.

It is an arithmetic number, because the mean of its divisors is an integer number (15228612).

Almost surely, 2^165802197 is an apocalyptic number.

It is an amenable number.

165802197 is a deficient number, since it is larger than the sum of its proper divisors (77855595).

165802197 is a wasteful number, since it uses less digits than its factorization.

165802197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51908.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 165802197 is about 12876.4201935165. The cubic root of 165802197 is about 549.3680863723.

The spelling of 165802197 in words is "one hundred sixty-five million, eight hundred two thousand, one hundred ninety-seven".