158197165 has 8 divisors (see below), whose sum is σ = 216956160. Its totient is φ = 108478032.

The previous prime is 158197153. The next prime is 158197177. The reversal of 158197165 is 561791851.

It is an interprime number because it is at equal distance from previous prime (158197153) and next prime (158197177).

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

It is a cyclic number.

It is not a de Polignac number, because 158197165 - 2⁷ = 158197037 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2259925 + ... + 2259994.

It is an arithmetic number, because the mean of its divisors is an integer number (27119520).

Almost surely, 2^158197165 is an apocalyptic number.

It is an amenable number.

158197165 is a deficient number, since it is larger than the sum of its proper divisors (58758995).

158197165 is an equidigital number, since it uses as much as digits as its factorization.

158197165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519931.

The product of its digits is 75600, while the sum is 43.

The square root of 158197165 is about 12577.6454473800. The cubic root of 158197165 is about 540.8367970309.

The spelling of 158197165 in words is "one hundred fifty-eight million, one hundred ninety-seven thousand, one hundred sixty-five".