1168978133 has 2 divisors, whose sum is σ = 1168978134. Its totient is φ = 1168978132.

The previous prime is 1168978117. The next prime is 1168978171. The reversal of 1168978133 is 3318798611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 698174929 + 470803204 = 26423^2 + 21698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168978133 - 2⁴ = 1168978117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1168078133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584489066 + 584489067.

It is an arithmetic number, because the mean of its divisors is an integer number (584489067).

Almost surely, 2^1168978133 is an apocalyptic number.

It is an amenable number.

1168978133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168978133 is an equidigital number, since it uses as much as digits as its factorization.

1168978133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 1168978133 is about 34190.3222125794. The cubic root of 1168978133 is about 1053.4213815621.

The spelling of 1168978133 in words is "one billion, one hundred sixty-eight million, nine hundred seventy-eight thousand, one hundred thirty-three".