812183941 has 2 divisors, whose sum is σ = 812183942. Its totient is φ = 812183940.

The previous prime is 812183927. The next prime is 812183963. The reversal of 812183941 is 149381218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775399716 + 36784225 = 27846^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 812183941 - 2¹⁵ = 812151173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 812183941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812181941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406091970 + 406091971.

It is an arithmetic number, because the mean of its divisors is an integer number (406091971).

Almost surely, 2^812183941 is an apocalyptic number.

It is an amenable number.

812183941 is a deficient number, since it is larger than the sum of its proper divisors (1).

812183941 is an equidigital number, since it uses as much as digits as its factorization.

812183941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 812183941 is about 28498.8410466110. The cubic root of 812183941 is about 933.0067792821.

The spelling of 812183941 in words is "eight hundred twelve million, one hundred eighty-three thousand, nine hundred forty-one".