2191792306 has 32 divisors (see below), whose sum is σ = 3670482240. Its totient is φ = 981319680.

The previous prime is 2191792283. The next prime is 2191792307. The reversal of 2191792306 is 6032971912.

It is not an unprimeable number, because it can be changed into a prime (2191792307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172210 + ... + 184498.

It is an arithmetic number, because the mean of its divisors is an integer number (114702570).

Almost surely, 2^2191792306 is an apocalyptic number.

2191792306 is a deficient number, since it is larger than the sum of its proper divisors (1478689934).

2191792306 is a wasteful number, since it uses less digits than its factorization.

2191792306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391 (or 12369 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 2191792306 is about 46816.5815283431. The cubic root of 2191792306 is about 1298.9720287691.

It can be divided in two parts, 2191 and 792306, that added together give a palindrome (794497).

The spelling of 2191792306 in words is "two billion, one hundred ninety-one million, seven hundred ninety-two thousand, three hundred six".