1108378979 has 4 divisors (see below), whose sum is σ = 1111555200. Its totient is φ = 1105202760.

The previous prime is 1108378963. The next prime is 1108379017. The reversal of 1108378979 is 9798738011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9798738011 = 109 ⋅89896679.

It is a cyclic number.

It is not a de Polignac number, because 1108378979 - 2⁴ = 1108378963 is a prime.

It is a super-2 number, since 2×1108378979² = 2457007922178164882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1108378979.

It is not an unprimeable number, because it can be changed into a prime (1108378279) 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, 1587587 + ... + 1588284.

It is an arithmetic number, because the mean of its divisors is an integer number (277888800).

Almost surely, 2^1108378979 is an apocalyptic number.

1108378979 is a deficient number, since it is larger than the sum of its proper divisors (3176221).

1108378979 is an equidigital number, since it uses as much as digits as its factorization.

1108378979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176220.

The product of its (nonzero) digits is 762048, while the sum is 53.

The square root of 1108378979 is about 33292.3261278031. The cubic root of 1108378979 is about 1034.8945349062.

The spelling of 1108378979 in words is "one billion, one hundred eight million, three hundred seventy-eight thousand, nine hundred seventy-nine".