1168435813 has 2 divisors, whose sum is σ = 1168435814. Its totient is φ = 1168435812.

The previous prime is 1168435783. The next prime is 1168435841. The reversal of 1168435813 is 3185348611.

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., 721620769 + 446815044 = 26863^2 + 21138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168435813 - 2¹³ = 1168427621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1168435013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584217906 + 584217907.

It is an arithmetic number, because the mean of its divisors is an integer number (584217907).

Almost surely, 2^1168435813 is an apocalyptic number.

It is an amenable number.

1168435813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168435813 is an equidigital number, since it uses as much as digits as its factorization.

1168435813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 1168435813 is about 34182.3903933005. The cubic root of 1168435813 is about 1053.2584529791.

The spelling of 1168435813 in words is "one billion, one hundred sixty-eight million, four hundred thirty-five thousand, eight hundred thirteen".