11808643419 has 12 divisors (see below), whose sum is σ = 17081622792. Its totient is φ = 7861032000.

The previous prime is 11808643387. The next prime is 11808643477. The reversal of 11808643419 is 91434680811.

11808643419 is a `hidden beast` number, since 118 + 0 + 86 + 43 + 419 = 666.

It is not a de Polignac number, because 11808643419 - 2⁵ = 11808643387 is a prime.

It is a super-2 number, since 2×11808643419² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11808643489) 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, 943182 + ... + 955619.

It is an arithmetic number, because the mean of its divisors is an integer number (1423468566).

Almost surely, 2^11808643419 is an apocalyptic number.

11808643419 is a deficient number, since it is larger than the sum of its proper divisors (5272979373).

11808643419 is a wasteful number, since it uses less digits than its factorization.

11808643419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899498 (or 1899495 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 11808643419 in words is "eleven billion, eight hundred eight million, six hundred forty-three thousand, four hundred nineteen".