1117968649 has 16 divisors (see below), whose sum is σ = 1311768576. Its totient is φ = 932907600.

The previous prime is 1117968619. The next prime is 1117968661. The reversal of 1117968649 is 9468697111.

It is a cyclic number.

It is not a de Polignac number, because 1117968649 - 2²⁵ = 1084414217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1117968596 and 1117968605.

It is not an unprimeable number, because it can be changed into a prime (1117968619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53944 + ... + 71734.

It is an arithmetic number, because the mean of its divisors is an integer number (81985536).

Almost surely, 2^1117968649 is an apocalyptic number.

It is an amenable number.

1117968649 is a deficient number, since it is larger than the sum of its proper divisors (193799927).

1117968649 is a wasteful number, since it uses less digits than its factorization.

1117968649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18036.

The product of its digits is 653184, while the sum is 52.

The square root of 1117968649 is about 33436.0381773918. The cubic root of 1117968649 is about 1037.8705964788.

The spelling of 1117968649 in words is "one billion, one hundred seventeen million, nine hundred sixty-eight thousand, six hundred forty-nine".