1116978011 has 4 divisors (see below), whose sum is σ = 1118205024. Its totient is φ = 1115751000.

The previous prime is 1116977999. The next prime is 1116978017. The reversal of 1116978011 is 1108796111.

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 1116978011 - 2²⁶ = 1049869147 is a prime.

It is a super-2 number, since 2×1116978011² = 2495279754115032242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116978017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612140 + ... + 613961.

It is an arithmetic number, because the mean of its divisors is an integer number (279551256).

Almost surely, 2^1116978011 is an apocalyptic number.

1116978011 is a deficient number, since it is larger than the sum of its proper divisors (1227013).

1116978011 is an equidigital number, since it uses as much as digits as its factorization.

1116978011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227012.

The product of its (nonzero) digits is 3024, while the sum is 35.

The square root of 1116978011 is about 33421.2209681214. The cubic root of 1116978011 is about 1037.5639516586.

The spelling of 1116978011 in words is "one billion, one hundred sixteen million, nine hundred seventy-eight thousand, eleven".