29818727749 has 2 divisors, whose sum is σ = 29818727750. Its totient is φ = 29818727748.

The previous prime is 29818727713. The next prime is 29818727773. The reversal of 29818727749 is 94772781892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19686896100 + 10131831649 = 140310^2 + 100657^2 .

It is a cyclic number.

It is not a de Polignac number, because 29818727749 - 2¹⁷ = 29818596677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29818727249) 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, 14909363874 + 14909363875.

It is an arithmetic number, because the mean of its divisors is an integer number (14909363875).

Almost surely, 2^29818727749 is an apocalyptic number.

It is an amenable number.

29818727749 is a deficient number, since it is larger than the sum of its proper divisors (1).

29818727749 is an equidigital number, since it uses as much as digits as its factorization.

29818727749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28449792, while the sum is 64.

The spelling of 29818727749 in words is "twenty-nine billion, eight hundred eighteen million, seven hundred twenty-seven thousand, seven hundred forty-nine".