2196949917191 has 4 divisors (see below), whose sum is σ = 2292469478832. Its totient is φ = 2101430355552.

The previous prime is 2196949917167. The next prime is 2196949917223. The reversal of 2196949917191 is 1917199496912.

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

It is a cyclic number.

It is not a de Polignac number, because 2196949917191 - 2¹⁰ = 2196949916167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196949917131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47759780786 + ... + 47759780831.

It is an arithmetic number, because the mean of its divisors is an integer number (573117369708).

Almost surely, 2^{2196949917191} is an apocalyptic number.

2196949917191 is a deficient number, since it is larger than the sum of its proper divisors (95519561641).

2196949917191 is an equidigital number, since it uses as much as digits as its factorization.

2196949917191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95519561640.

The product of its digits is 19840464, while the sum is 68.

The spelling of 2196949917191 in words is "two trillion, one hundred ninety-six billion, nine hundred forty-nine million, nine hundred seventeen thousand, one hundred ninety-one".