158109373 has 4 divisors (see below), whose sum is σ = 158788188. Its totient is φ = 157430560.

The previous prime is 158109361. The next prime is 158109389. The reversal of 158109373 is 373901851.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71284249 + 86825124 = 8443^2 + 9318^2 .

It is a cyclic number.

It is not a de Polignac number, because 158109373 - 2²¹ = 156012221 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 (158109353) 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, 339058 + ... + 339523.

It is an arithmetic number, because the mean of its divisors is an integer number (39697047).

Almost surely, 2^158109373 is an apocalyptic number.

It is an amenable number.

158109373 is a deficient number, since it is larger than the sum of its proper divisors (678815).

158109373 is an equidigital number, since it uses as much as digits as its factorization.

158109373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678814.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 158109373 is about 12574.1549616664. The cubic root of 158109373 is about 540.7367321739.

The spelling of 158109373 in words is "one hundred fifty-eight million, one hundred nine thousand, three hundred seventy-three".