11194909636 has 9 divisors (see below), whose sum is σ = 19591462191. Its totient is φ = 5597349012.

The previous prime is 11194909603. The next prime is 11194909639. The reversal of 11194909636 is 63690949111.

The square root of 11194909636 is 105806.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11194909636.

It is not an unprimeable number, because it can be changed into a prime (11194909639) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 185161 + ... + 238063.

Almost surely, 2^11194909636 is an apocalyptic number.

11194909636 is the 105806-th square number.

It is an amenable number.

11194909636 is a deficient number, since it is larger than the sum of its proper divisors (8396552555).

11194909636 is an frugal number, since it uses more digits than its factorization.

11194909636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105810 (or 52905 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

Multiplying 11194909636 by its sum of digits (49), we get a square (548550572164 = 740642²).

The spelling of 11194909636 in words is "eleven billion, one hundred ninety-four million, nine hundred nine thousand, six hundred thirty-six".