636795941 has 2 divisors, whose sum is σ = 636795942. Its totient is φ = 636795940.

The previous prime is 636795889. The next prime is 636795953. The reversal of 636795941 is 149597636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531302500 + 105493441 = 23050^2 + 10271^2 .

It is a cyclic number.

It is not a de Polignac number, because 636795941 - 2¹⁸ = 636533797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 636795941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636792941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318397970 + 318397971.

It is an arithmetic number, because the mean of its divisors is an integer number (318397971).

Almost surely, 2^636795941 is an apocalyptic number.

It is an amenable number.

636795941 is a deficient number, since it is larger than the sum of its proper divisors (1).

636795941 is an equidigital number, since it uses as much as digits as its factorization.

636795941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 636795941 is about 25234.8160484676. The cubic root of 636795941 is about 860.3333577854. Note that the first 4 decimals are identical.

It can be divided in two parts, 636795 and 941, that added together give a palindrome (637736).

The spelling of 636795941 in words is "six hundred thirty-six million, seven hundred ninety-five thousand, nine hundred forty-one".