830681807749 has 2 divisors, whose sum is σ = 830681807750. Its totient is φ = 830681807748.

The previous prime is 830681807737. The next prime is 830681807771. The reversal of 830681807749 is 947708186038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668911336900 + 161770470849 = 817870^2 + 402207^2 .

It is a cyclic number.

It is not a de Polignac number, because 830681807749 - 2⁹ = 830681807237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830681807729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415340903874 + 415340903875.

It is an arithmetic number, because the mean of its divisors is an integer number (415340903875).

Almost surely, 2^830681807749 is an apocalyptic number.

It is an amenable number.

830681807749 is a deficient number, since it is larger than the sum of its proper divisors (1).

830681807749 is an equidigital number, since it uses as much as digits as its factorization.

830681807749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 830681807749 in words is "eight hundred thirty billion, six hundred eighty-one million, eight hundred seven thousand, seven hundred forty-nine".