158173943 has 4 divisors (see below), whose sum is σ = 158504640. Its totient is φ = 157843248.

The previous prime is 158173937. The next prime is 158173957. The reversal of 158173943 is 349371851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158173943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158173943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158173913) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 164630 + ... + 165587.

It is an arithmetic number, because the mean of its divisors is an integer number (39626160).

Almost surely, 2^158173943 is an apocalyptic number.

158173943 is a deficient number, since it is larger than the sum of its proper divisors (330697).

158173943 is an equidigital number, since it uses as much as digits as its factorization.

158173943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330696.

The product of its digits is 90720, while the sum is 41.

The square root of 158173943 is about 12576.7222677453. The cubic root of 158173943 is about 540.8103323201.

The spelling of 158173943 in words is "one hundred fifty-eight million, one hundred seventy-three thousand, nine hundred forty-three".