158871693 has 4 divisors (see below), whose sum is σ = 211828928. Its totient is φ = 105914460.

The previous prime is 158871689. The next prime is 158871701. The reversal of 158871693 is 396178851.

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.

It is not a de Polignac number, because 158871693 - 2² = 158871689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158871653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26478613 + ... + 26478618.

It is an arithmetic number, because the mean of its divisors is an integer number (52957232).

Almost surely, 2^158871693 is an apocalyptic number.

It is an amenable number.

158871693 is a deficient number, since it is larger than the sum of its proper divisors (52957235).

158871693 is an equidigital number, since it uses as much as digits as its factorization.

158871693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52957234.

The product of its digits is 362880, while the sum is 48.

The square root of 158871693 is about 12604.4314826175. The cubic root of 158871693 is about 541.6043883059.

The spelling of 158871693 in words is "one hundred fifty-eight million, eight hundred seventy-one thousand, six hundred ninety-three".