1856315013 has 16 divisors (see below), whose sum is σ = 2829926400. Its totient is φ = 1060280496.

The previous prime is 1856314997. The next prime is 1856315039. The reversal of 1856315013 is 3105136581.

It is not a de Polignac number, because 1856315013 - 2⁴ = 1856314997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1856315213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31956 + ... + 68802.

It is an arithmetic number, because the mean of its divisors is an integer number (176870400).

Almost surely, 2^1856315013 is an apocalyptic number.

It is an amenable number.

1856315013 is a deficient number, since it is larger than the sum of its proper divisors (973611387).

1856315013 is a wasteful number, since it uses less digits than its factorization.

1856315013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39256.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1856315013 is about 43084.9743298055. The cubic root of 1856315013 is about 1228.9962536213.

The spelling of 1856315013 in words is "one billion, eight hundred fifty-six million, three hundred fifteen thousand, thirteen".