812236153 has 2 divisors, whose sum is σ = 812236154. Its totient is φ = 812236152.

The previous prime is 812236133. The next prime is 812236169. The reversal of 812236153 is 351632218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736145424 + 76090729 = 27132^2 + 8723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812236153 is a prime.

It is not a weakly prime, because it can be changed into another prime (812236123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406118076 + 406118077.

It is an arithmetic number, because the mean of its divisors is an integer number (406118077).

Almost surely, 2^812236153 is an apocalyptic number.

It is an amenable number.

812236153 is a deficient number, since it is larger than the sum of its proper divisors (1).

812236153 is an equidigital number, since it uses as much as digits as its factorization.

812236153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 812236153 is about 28499.7570691401. The cubic root of 812236153 is about 933.0267719232.

The spelling of 812236153 in words is "eight hundred twelve million, two hundred thirty-six thousand, one hundred fifty-three".