11894715858 has 32 divisors (see below), whose sum is σ = 23853626496. Its totient is φ = 3954222848.

The previous prime is 11894715851. The next prime is 11894715881. The reversal of 11894715858 is 85851749811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11894715798 and 11894715807.

It is not an unprimeable number, because it can be changed into a prime (11894715851) 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, 6027760 + ... + 6029732.

It is an arithmetic number, because the mean of its divisors is an integer number (745425828).

Almost surely, 2^11894715858 is an apocalyptic number.

11894715858 is an abundant number, since it is smaller than the sum of its proper divisors (11958910638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11894715858 is a wasteful number, since it uses less digits than its factorization.

11894715858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178.

The product of its digits is 3225600, while the sum is 57.

The spelling of 11894715858 in words is "eleven billion, eight hundred ninety-four million, seven hundred fifteen thousand, eight hundred fifty-eight".