158540979 has 4 divisors (see below), whose sum is σ = 211387976. Its totient is φ = 105693984.

The previous prime is 158540953. The next prime is 158541007. The reversal of 158540979 is 979045851.

158540979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 158540979 - 2⁵ = 158540947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158540779) 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, 26423494 + ... + 26423499.

It is an arithmetic number, because the mean of its divisors is an integer number (52846994).

Almost surely, 2^158540979 is an apocalyptic number.

158540979 is a deficient number, since it is larger than the sum of its proper divisors (52846997).

158540979 is an equidigital number, since it uses as much as digits as its factorization.

158540979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52846996.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 158540979 is about 12591.3056908329. The cubic root of 158540979 is about 541.2283184107.

The spelling of 158540979 in words is "one hundred fifty-eight million, five hundred forty thousand, nine hundred seventy-nine".