8119944757 has 2 divisors, whose sum is σ = 8119944758. Its totient is φ = 8119944756.

The previous prime is 8119944739. The next prime is 8119944803. The reversal of 8119944757 is 7574499118.

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., 4668852241 + 3451092516 = 68329^2 + 58746^2 .

It is a cyclic number.

It is not a de Polignac number, because 8119944757 - 2¹¹ = 8119942709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8119944698 and 8119944707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8119944727) 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, 4059972378 + 4059972379.

It is an arithmetic number, because the mean of its divisors is an integer number (4059972379).

Almost surely, 2^8119944757 is an apocalyptic number.

It is an amenable number.

8119944757 is a deficient number, since it is larger than the sum of its proper divisors (1).

8119944757 is an equidigital number, since it uses as much as digits as its factorization.

8119944757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The square root of 8119944757 is about 90110.7360806691. The cubic root of 8119944757 is about 2009.9458544196.

The spelling of 8119944757 in words is "eight billion, one hundred nineteen million, nine hundred forty-four thousand, seven hundred fifty-seven".