811168741 has 2 divisors, whose sum is σ = 811168742. Its totient is φ = 811168740.

The previous prime is 811168733. The next prime is 811168747. The reversal of 811168741 is 147861118.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 809402500 + 1766241 = 28450^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 811168741 - 2³ = 811168733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 811168741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811168747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405584370 + 405584371.

It is an arithmetic number, because the mean of its divisors is an integer number (405584371).

Almost surely, 2^811168741 is an apocalyptic number.

It is an amenable number.

811168741 is a deficient number, since it is larger than the sum of its proper divisors (1).

811168741 is an equidigital number, since it uses as much as digits as its factorization.

811168741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 37.

The square root of 811168741 is about 28481.0242266671. The cubic root of 811168741 is about 932.6178758334.

The spelling of 811168741 in words is "eight hundred eleven million, one hundred sixty-eight thousand, seven hundred forty-one".