11782089918 has 48 divisors (see below), whose sum is σ = 25805800800. Its totient is φ = 3884836032.

The previous prime is 11782089863. The next prime is 11782089947. The reversal of 11782089918 is 81998028711.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610180 + ... + 629192.

It is an arithmetic number, because the mean of its divisors is an integer number (537620850).

Almost surely, 2^11782089918 is an apocalyptic number.

11782089918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11782089918 is an abundant number, since it is smaller than the sum of its proper divisors (14023710882).

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

11782089918 is a wasteful number, since it uses less digits than its factorization.

11782089918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19393 (or 19390 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 54.

The spelling of 11782089918 in words is "eleven billion, seven hundred eighty-two million, eighty-nine thousand, nine hundred eighteen".