158020879 has 4 divisors (see below), whose sum is σ = 164891376. Its totient is φ = 151150384.

The previous prime is 158020859. The next prime is 158020883. The reversal of 158020879 is 978020851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978020851 = 2063 ⋅474077.

It is a cyclic number.

It is not a de Polignac number, because 158020879 - 2¹¹ = 158018831 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158020859) 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, 3435214 + ... + 3435259.

It is an arithmetic number, because the mean of its divisors is an integer number (41222844).

Almost surely, 2^158020879 is an apocalyptic number.

158020879 is a deficient number, since it is larger than the sum of its proper divisors (6870497).

158020879 is an equidigital number, since it uses as much as digits as its factorization.

158020879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870496.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 158020879 is about 12570.6355845677. The cubic root of 158020879 is about 540.6358296872.

The spelling of 158020879 in words is "one hundred fifty-eight million, twenty thousand, eight hundred seventy-nine".