2191260814 has 4 divisors (see below), whose sum is σ = 3286891224. Its totient is φ = 1095630406.

The previous prime is 2191260803. The next prime is 2191260817. The reversal of 2191260814 is 4180621912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2191260814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191260817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547815202 + ... + 547815205.

It is an arithmetic number, because the mean of its divisors is an integer number (821722806).

Almost surely, 2^2191260814 is an apocalyptic number.

2191260814 is a deficient number, since it is larger than the sum of its proper divisors (1095630410).

2191260814 is a wasteful number, since it uses less digits than its factorization.

2191260814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095630409.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2191260814 is about 46810.9048620084. The cubic root of 2191260814 is about 1298.8670235257.

The spelling of 2191260814 in words is "two billion, one hundred ninety-one million, two hundred sixty thousand, eight hundred fourteen".