1117637999 has 2 divisors, whose sum is σ = 1117638000. Its totient is φ = 1117637998.

The previous prime is 1117637971. The next prime is 1117638017. The reversal of 1117637999 is 9997367111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117637999 is a prime.

It is a super-2 number, since 2×1117637999² = 2498229393617448002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1117637999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117637099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558818999 + 558819000.

It is an arithmetic number, because the mean of its divisors is an integer number (558819000).

Almost surely, 2^1117637999 is an apocalyptic number.

1117637999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117637999 is an equidigital number, since it uses as much as digits as its factorization.

1117637999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 53.

The square root of 1117637999 is about 33431.0932965107. The cubic root of 1117637999 is about 1037.7682663133.

The spelling of 1117637999 in words is "one billion, one hundred seventeen million, six hundred thirty-seven thousand, nine hundred ninety-nine".