2195702749 has 2 divisors, whose sum is σ = 2195702750. Its totient is φ = 2195702748.

The previous prime is 2195702701. The next prime is 2195702753. The reversal of 2195702749 is 9472075912.

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., 1975180249 + 220522500 = 44443^2 + 14850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2195702749 - 2²¹ = 2193605597 is a prime.

It is a super-2 number, since 2×2195702749² = 9642221123932314002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2195702699 and 2195702708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2195702849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097851374 + 1097851375.

It is an arithmetic number, because the mean of its divisors is an integer number (1097851375).

Almost surely, 2^2195702749 is an apocalyptic number.

It is an amenable number.

2195702749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195702749 is an equidigital number, since it uses as much as digits as its factorization.

2195702749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 2195702749 is about 46858.3263572228. The cubic root of 2195702749 is about 1299.7440815758.

The spelling of 2195702749 in words is "two billion, one hundred ninety-five million, seven hundred two thousand, seven hundred forty-nine".