158872197 has 16 divisors (see below), whose sum is σ = 231520320. Its totient is φ = 96105600.

The previous prime is 158872183. The next prime is 158872199. The reversal of 158872197 is 791278851.

It is a happy number.

It is not a de Polignac number, because 158872197 - 2⁷ = 158872069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158872199) 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, 14547 + ... + 23007.

It is an arithmetic number, because the mean of its divisors is an integer number (14470020).

Almost surely, 2^158872197 is an apocalyptic number.

It is an amenable number.

158872197 is a deficient number, since it is larger than the sum of its proper divisors (72648123).

158872197 is a wasteful number, since it uses less digits than its factorization.

158872197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044.

The product of its digits is 282240, while the sum is 48.

The square root of 158872197 is about 12604.4514755700. The cubic root of 158872197 is about 541.6049610287.

The spelling of 158872197 in words is "one hundred fifty-eight million, eight hundred seventy-two thousand, one hundred ninety-seven".