8130405757 has 2 divisors, whose sum is σ = 8130405758. Its totient is φ = 8130405756.

The previous prime is 8130405749. The next prime is 8130405763. The reversal of 8130405757 is 7575040318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7901609881 + 228795876 = 88891^2 + 15126^2 .

It is a cyclic number.

It is not a de Polignac number, because 8130405757 - 2³ = 8130405749 is a prime.

It is a super-2 number, since 2×8130405757² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8130405707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065202878 + 4065202879.

It is an arithmetic number, because the mean of its divisors is an integer number (4065202879).

Almost surely, 2^8130405757 is an apocalyptic number.

It is an amenable number.

8130405757 is a deficient number, since it is larger than the sum of its proper divisors (1).

8130405757 is an equidigital number, since it uses as much as digits as its factorization.

8130405757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 8130405757 is about 90168.7626453862. The cubic root of 8130405757 is about 2010.8086279696.

The spelling of 8130405757 in words is "eight billion, one hundred thirty million, four hundred five thousand, seven hundred fifty-seven".