1118159279 has 4 divisors (see below), whose sum is σ = 1122285600. Its totient is φ = 1114032960.

The previous prime is 1118159239. The next prime is 1118159297. The reversal of 1118159279 is 9729518111.

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 1118159279 - 2²⁰ = 1117110703 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 (1118159239) 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, 2062754 + ... + 2063295.

It is an arithmetic number, because the mean of its divisors is an integer number (280571400).

Almost surely, 2^1118159279 is an apocalyptic number.

1118159279 is a deficient number, since it is larger than the sum of its proper divisors (4126321).

1118159279 is an equidigital number, since it uses as much as digits as its factorization.

1118159279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126320.

The product of its digits is 45360, while the sum is 44.

The square root of 1118159279 is about 33438.8887225637. Note that the first 3 decimals coincide. The cubic root of 1118159279 is about 1037.9295838298.

The spelling of 1118159279 in words is "one billion, one hundred eighteen million, one hundred fifty-nine thousand, two hundred seventy-nine".