2195980349 has 2 divisors, whose sum is σ = 2195980350. Its totient is φ = 2195980348.

The previous prime is 2195980343. The next prime is 2195980351. The reversal of 2195980349 is 9430895912.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2145357124 + 50623225 = 46318^2 + 7115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2195980349 - 2²⁰ = 2194931773 is a prime.

Together with 2195980351, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2195980297 and 2195980306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2195980343) 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 as a sum of consecutive naturals, namely, 1097990174 + 1097990175.

It is an arithmetic number, because the mean of its divisors is an integer number (1097990175).

Almost surely, 2^2195980349 is an apocalyptic number.

It is an amenable number.

2195980349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195980349 is an equidigital number, since it uses as much as digits as its factorization.

2195980349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 2195980349 is about 46861.2883839102. The cubic root of 2195980349 is about 1299.7988542832.

The spelling of 2195980349 in words is "two billion, one hundred ninety-five million, nine hundred eighty thousand, three hundred forty-nine".