11858244813 has 6 divisors (see below), whose sum is σ = 17128575854. Its totient is φ = 7905496536.

The previous prime is 11858244791. The next prime is 11858244817. The reversal of 11858244813 is 31844285811.

11858244813 is a `hidden beast` number, since 1 + 18 + 582 + 4 + 48 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9726298884 + 2131945929 = 98622^2 + 46173^2 .

It is not a de Polignac number, because 11858244813 - 2²¹ = 11856147661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858244817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 658791370 + ... + 658791387.

Almost surely, 2^11858244813 is an apocalyptic number.

It is an amenable number.

11858244813 is a deficient number, since it is larger than the sum of its proper divisors (5270331041).

11858244813 is a wasteful number, since it uses less digits than its factorization.

11858244813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317582763 (or 1317582760 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The spelling of 11858244813 in words is "eleven billion, eight hundred fifty-eight million, two hundred forty-four thousand, eight hundred thirteen".