810486133 has 8 divisors (see below), whose sum is σ = 815051160. Its totient is φ = 805931520.

The previous prime is 810486107. The next prime is 810486139. The reversal of 810486133 is 331684018.

It can be written as a sum of positive squares in 4 ways, for example, as 351112644 + 459373489 = 18738^2 + 21433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810486133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810486139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192891 + ... + 197047.

It is an arithmetic number, because the mean of its divisors is an integer number (101881395).

Almost surely, 2^810486133 is an apocalyptic number.

It is an amenable number.

810486133 is a deficient number, since it is larger than the sum of its proper divisors (4565027).

810486133 is a wasteful number, since it uses less digits than its factorization.

810486133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 810486133 is about 28469.0381467306. The cubic root of 810486133 is about 932.3561994617.

The spelling of 810486133 in words is "eight hundred ten million, four hundred eighty-six thousand, one hundred thirty-three".