813143159 has 2 divisors, whose sum is σ = 813143160. Its totient is φ = 813143158.

The previous prime is 813143083. The next prime is 813143179. The reversal of 813143159 is 951341318.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813143159 is a prime.

It is a super-2 number, since 2×813143159² = 1322403594056998562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813143179) 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, 406571579 + 406571580.

It is an arithmetic number, because the mean of its divisors is an integer number (406571580).

Almost surely, 2^813143159 is an apocalyptic number.

813143159 is a deficient number, since it is larger than the sum of its proper divisors (1).

813143159 is an equidigital number, since it uses as much as digits as its factorization.

813143159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 813143159 is about 28515.6651509306. The cubic root of 813143159 is about 933.3739394607.

The spelling of 813143159 in words is "eight hundred thirteen million, one hundred forty-three thousand, one hundred fifty-nine".