158365197 has 12 divisors (see below), whose sum is σ = 229702044. Its totient is φ = 105137280.

The previous prime is 158365177. The next prime is 158365213. The reversal of 158365197 is 791563851.

It is a happy number.

158365197 is a `hidden beast` number, since 1 + 583 + 65 + 1 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 123010281 + 35354916 = 11091^2 + 5946^2 .

It is not a de Polignac number, because 158365197 - 2¹⁵ = 158332429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158365127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34338 + ... + 38675.

It is an arithmetic number, because the mean of its divisors is an integer number (19141837).

Almost surely, 2^158365197 is an apocalyptic number.

It is an amenable number.

158365197 is a deficient number, since it is larger than the sum of its proper divisors (71336847).

158365197 is a wasteful number, since it uses less digits than its factorization.

158365197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73260 (or 73257 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 158365197 is about 12584.3234621492. The cubic root of 158365197 is about 541.0282158253.

The spelling of 158365197 in words is "one hundred fifty-eight million, three hundred sixty-five thousand, one hundred ninety-seven".