1168751997 has 144 divisors (see below), whose sum is σ = 2231989760. Its totient is φ = 596683584.

The previous prime is 1168751981. The next prime is 1168752047. The reversal of 1168751997 is 7991578611.

1168751997 is a `hidden beast` number, since 116 + 8 + 7 + 519 + 9 + 7 = 666.

It is not a de Polignac number, because 1168751997 - 2⁴ = 1168751981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168751797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 27180258 + ... + 27180300.

Almost surely, 2^1168751997 is an apocalyptic number.

It is an amenable number.

1168751997 is a deficient number, since it is larger than the sum of its proper divisors (1063237763).

1168751997 is an equidigital number, since it uses as much as digits as its factorization.

1168751997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 101 counting only the distinct ones).

The product of its digits is 952560, while the sum is 54.

The square root of 1168751997 is about 34187.0150349515. The cubic root of 1168751997 is about 1053.3534499065.

The spelling of 1168751997 in words is "one billion, one hundred sixty-eight million, seven hundred fifty-one thousand, nine hundred ninety-seven".