11738731866 has 16 divisors (see below), whose sum is σ = 23482708704. Its totient is φ = 3912036464.

The previous prime is 11738731861. The next prime is 11738731903. The reversal of 11738731866 is 66813783711.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11738731861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189141 + ... + 243416.

It is an arithmetic number, because the mean of its divisors is an integer number (1467669294).

Almost surely, 2^11738731866 is an apocalyptic number.

11738731866 is an abundant number, since it is smaller than the sum of its proper divisors (11743976838).

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

11738731866 is a wasteful number, since it uses less digits than its factorization.

11738731866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437085.

The product of its digits is 1016064, while the sum is 51.

The spelling of 11738731866 in words is "eleven billion, seven hundred thirty-eight million, seven hundred thirty-one thousand, eight hundred sixty-six".