1158708979 has 4 divisors (see below), whose sum is σ = 1196086720. Its totient is φ = 1121331240.

The previous prime is 1158708953. The next prime is 1158708989. The reversal of 1158708979 is 9798078511.

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

It is a cyclic number.

It is not a de Polignac number, because 1158708979 - 2⁷ = 1158708851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158708989) 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, 18688824 + ... + 18688885.

It is an arithmetic number, because the mean of its divisors is an integer number (299021680).

Almost surely, 2^1158708979 is an apocalyptic number.

1158708979 is a deficient number, since it is larger than the sum of its proper divisors (37377741).

1158708979 is an equidigital number, since it uses as much as digits as its factorization.

1158708979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37377740.

The product of its (nonzero) digits is 1270080, while the sum is 55.

The square root of 1158708979 is about 34039.8146146538. The cubic root of 1158708979 is about 1050.3276313943.

The spelling of 1158708979 in words is "one billion, one hundred fifty-eight million, seven hundred eight thousand, nine hundred seventy-nine".