130128797 has 2 divisors, whose sum is σ = 130128798. Its totient is φ = 130128796.

The previous prime is 130128787. The next prime is 130128827. The reversal of 130128797 is 797821031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129185956 + 942841 = 11366^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 130128797 - 2⁴ = 130128781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130128797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130128737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65064398 + 65064399.

It is an arithmetic number, because the mean of its divisors is an integer number (65064399).

Almost surely, 2^130128797 is an apocalyptic number.

It is an amenable number.

130128797 is a deficient number, since it is larger than the sum of its proper divisors (1).

130128797 is an equidigital number, since it uses as much as digits as its factorization.

130128797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 130128797 is about 11407.4009748058. The cubic root of 130128797 is about 506.7469439879.

The spelling of 130128797 in words is "one hundred thirty million, one hundred twenty-eight thousand, seven hundred ninety-seven".