1115763993 has 12 divisors (see below), whose sum is σ = 1638080548. Its totient is φ = 731648160.

The previous prime is 1115763983. The next prime is 1115764051. The reversal of 1115763993 is 3993675111.

It is a happy number.

1115763993 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 7 + 639 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17040384 + 1098723609 = 4128^2 + 33147^2 .

It is not a de Polignac number, because 1115763993 - 2²⁰ = 1114715417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115763953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1015630 + ... + 1016727.

Almost surely, 2^1115763993 is an apocalyptic number.

It is an amenable number.

1115763993 is a deficient number, since it is larger than the sum of its proper divisors (522316555).

1115763993 is a wasteful number, since it uses less digits than its factorization.

1115763993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032424 (or 2032421 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 1115763993 is about 33403.0536478329. The cubic root of 1115763993 is about 1037.1879138351.

The spelling of 1115763993 in words is "one billion, one hundred fifteen million, seven hundred sixty-three thousand, nine hundred ninety-three".