1196776813 has 2 divisors, whose sum is σ = 1196776814. Its totient is φ = 1196776812.

The previous prime is 1196776787. The next prime is 1196776837. The reversal of 1196776813 is 3186776911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1160560489 + 36216324 = 34067^2 + 6018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1196776813 - 2²⁹ = 659905901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1196776613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598388406 + 598388407.

It is an arithmetic number, because the mean of its divisors is an integer number (598388407).

Almost surely, 2^1196776813 is an apocalyptic number.

It is an amenable number.

1196776813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196776813 is an equidigital number, since it uses as much as digits as its factorization.

1196776813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 1196776813 is about 34594.4621724345. The cubic root of 1196776813 is about 1061.7062862643.

The spelling of 1196776813 in words is "one billion, one hundred ninety-six million, seven hundred seventy-six thousand, eight hundred thirteen".