810843013 has 8 divisors (see below), whose sum is σ = 828599040. Its totient is φ = 793108080.

The previous prime is 810843001. The next prime is 810843023. The reversal of 810843013 is 310348018.

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

It is a de Polignac number, because none of the positive numbers 2^k-810843013 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 (810843023) 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, 91603 + ... + 100063.

It is an arithmetic number, because the mean of its divisors is an integer number (103574880).

Almost surely, 2^810843013 is an apocalyptic number.

It is an amenable number.

810843013 is a deficient number, since it is larger than the sum of its proper divisors (17756027).

810843013 is a wasteful number, since it uses less digits than its factorization.

810843013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 810843013 is about 28475.3053188197. The cubic root of 810843013 is about 932.4930269947.

The spelling of 810843013 in words is "eight hundred ten million, eight hundred forty-three thousand, thirteen".