1116949213 has 4 divisors (see below), whose sum is σ = 1117868220. Its totient is φ = 1116030208.

The previous prime is 1116949193. The next prime is 1116949217. The reversal of 1116949213 is 3129496111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 877225924 + 239723289 = 29618^2 + 15483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1116949213 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 (1116949217) 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, 457678 + ... + 460111.

It is an arithmetic number, because the mean of its divisors is an integer number (279467055).

Almost surely, 2^1116949213 is an apocalyptic number.

It is an amenable number.

1116949213 is a deficient number, since it is larger than the sum of its proper divisors (919007).

1116949213 is an equidigital number, since it uses as much as digits as its factorization.

1116949213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919006.

The product of its digits is 11664, while the sum is 37.

The square root of 1116949213 is about 33420.7901312940. The cubic root of 1116949213 is about 1037.5550347348. Note that the first 3 decimals are identical.

The spelling of 1116949213 in words is "one billion, one hundred sixteen million, nine hundred forty-nine thousand, two hundred thirteen".