11919835684 has 27 divisors (see below), whose sum is σ = 21157720731. Its totient is φ = 5875959960.

The previous prime is 11919835679. The next prime is 11919835709. The reversal of 11919835684 is 48653891911.

It is a happy number.

The square root of 11919835684 is 109178.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17249779 + ... + 17250469.

Almost surely, 2^11919835684 is an apocalyptic number.

11919835684 is the 109178-th square number.

It is an amenable number.

11919835684 is a deficient number, since it is larger than the sum of its proper divisors (9237885047).

11919835684 is an frugal number, since it uses more digits than its factorization.

11919835684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 772 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 55.

The spelling of 11919835684 in words is "eleven billion, nine hundred nineteen million, eight hundred thirty-five thousand, six hundred eighty-four".