810397143 has 40 divisors (see below), whose sum is σ = 1234926000. Its totient is φ = 529517952.

The previous prime is 810397109. The next prime is 810397151. The reversal of 810397143 is 341793018.

It is a happy number.

It is not a de Polignac number, because 810397143 - 2⁶ = 810397079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 810397098 and 810397107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810397153) 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 in 39 ways as a sum of consecutive naturals, for example, 1001323 + ... + 1002131.

It is an arithmetic number, because the mean of its divisors is an integer number (30873150).

Almost surely, 2^810397143 is an apocalyptic number.

810397143 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

810397143 is a deficient number, since it is larger than the sum of its proper divisors (424528857).

810397143 is a wasteful number, since it uses less digits than its factorization.

810397143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 810397143 is about 28467.4751778236. The cubic root of 810397143 is about 932.3220745040.

The spelling of 810397143 in words is "eight hundred ten million, three hundred ninety-seven thousand, one hundred forty-three".