2182311749 has 2 divisors, whose sum is σ = 2182311750. Its totient is φ = 2182311748.

The previous prime is 2182311707. The next prime is 2182311793. The reversal of 2182311749 is 9471132812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1257057025 + 925254724 = 35455^2 + 30418^2 .

It is a cyclic number.

It is not a de Polignac number, because 2182311749 - 2⁸ = 2182311493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2182311049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091155874 + 1091155875.

It is an arithmetic number, because the mean of its divisors is an integer number (1091155875).

Almost surely, 2^2182311749 is an apocalyptic number.

It is an amenable number.

2182311749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2182311749 is an equidigital number, since it uses as much as digits as its factorization.

2182311749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 2182311749 is about 46715.2196719656. The cubic root of 2182311749 is about 1297.0964287273.

The spelling of 2182311749 in words is "two billion, one hundred eighty-two million, three hundred eleven thousand, seven hundred forty-nine".