816010013 has 32 divisors (see below), whose sum is σ = 1066431744. Its totient is φ = 605924352.

The previous prime is 816010001. The next prime is 816010021. The reversal of 816010013 is 310010618.

It is a cyclic number.

It is not a de Polignac number, because 816010013 - 2¹² = 816005917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816010213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 861206 + ... + 862152.

It is an arithmetic number, because the mean of its divisors is an integer number (33325992).

Almost surely, 2^816010013 is an apocalyptic number.

It is an amenable number.

816010013 is a deficient number, since it is larger than the sum of its proper divisors (250421731).

816010013 is a wasteful number, since it uses less digits than its factorization.

816010013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 816010013 is about 28565.8889761898. Note that the first 3 decimals coincide. The cubic root of 816010013 is about 934.4695678799.

The spelling of 816010013 in words is "eight hundred sixteen million, ten thousand, thirteen".