9857858013 has 12 divisors (see below), whose sum is σ = 14507791740. Its totient is φ = 6447906816.

The previous prime is 9857857993. The next prime is 9857858039. The reversal of 9857858013 is 3108587589.

9857858013 is a `hidden beast` number, since 9 + 8 + 57 + 8 + 580 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7472219364 + 2385638649 = 86442^2 + 48843^2 .

It is not a de Polignac number, because 9857858013 - 2¹³ = 9857849821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9857858093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10332708 + ... + 10333661.

It is an arithmetic number, because the mean of its divisors is an integer number (1208982645).

Almost surely, 2^9857858013 is an apocalyptic number.

It is an amenable number.

9857858013 is a deficient number, since it is larger than the sum of its proper divisors (4649933727).

9857858013 is a wasteful number, since it uses less digits than its factorization.

9857858013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666428 (or 20666425 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The square root of 9857858013 is about 99286.7464115931. The cubic root of 9857858013 is about 2144.1780846967.

The spelling of 9857858013 in words is "nine billion, eight hundred fifty-seven million, eight hundred fifty-eight thousand, thirteen".