2664342749 has 2 divisors, whose sum is σ = 2664342750. Its totient is φ = 2664342748.

The previous prime is 2664342727. The next prime is 2664342757. The reversal of 2664342749 is 9472434662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2555808025 + 108534724 = 50555^2 + 10418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664342749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664342719) 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, 1332171374 + 1332171375.

It is an arithmetic number, because the mean of its divisors is an integer number (1332171375).

Almost surely, 2^2664342749 is an apocalyptic number.

It is an amenable number.

2664342749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664342749 is an equidigital number, since it uses as much as digits as its factorization.

2664342749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 47.

The square root of 2664342749 is about 51617.2718089595. The cubic root of 2664342749 is about 1386.3196029983.

The spelling of 2664342749 in words is "two billion, six hundred sixty-four million, three hundred forty-two thousand, seven hundred forty-nine".