158973313 has 4 divisors (see below), whose sum is σ = 160759620. Its totient is φ = 157187008.

The previous prime is 158973271. The next prime is 158973371. The reversal of 158973313 is 313379851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313379851 = 41 ⋅7643411.

It can be written as a sum of positive squares in 2 ways, for example, as 32455809 + 126517504 = 5697^2 + 11248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158973313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158973413) 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, 893020 + ... + 893197.

It is an arithmetic number, because the mean of its divisors is an integer number (40189905).

Almost surely, 2^158973313 is an apocalyptic number.

It is an amenable number.

158973313 is a deficient number, since it is larger than the sum of its proper divisors (1786307).

158973313 is an equidigital number, since it uses as much as digits as its factorization.

158973313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786306.

The product of its digits is 68040, while the sum is 40.

The square root of 158973313 is about 12608.4619601282. The cubic root of 158973313 is about 541.7198401869.

The spelling of 158973313 in words is "one hundred fifty-eight million, nine hundred seventy-three thousand, three hundred thirteen".