1117995757 has 2 divisors, whose sum is σ = 1117995758. Its totient is φ = 1117995756.

The previous prime is 1117995709. The next prime is 1117995787. The reversal of 1117995757 is 7575997111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 748241316 + 369754441 = 27354^2 + 19229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117995757 is a prime.

It is a super-3 number, since 3×1117995757³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117995787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558997878 + 558997879.

It is an arithmetic number, because the mean of its divisors is an integer number (558997879).

Almost surely, 2^1117995757 is an apocalyptic number.

It is an amenable number.

1117995757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117995757 is an equidigital number, since it uses as much as digits as its factorization.

1117995757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 694575, while the sum is 52.

The square root of 1117995757 is about 33436.4435459275. The cubic root of 1117995757 is about 1037.8789850171.

The spelling of 1117995757 in words is "one billion, one hundred seventeen million, nine hundred ninety-five thousand, seven hundred fifty-seven".