130628779 has 2 divisors, whose sum is σ = 130628780. Its totient is φ = 130628778.

The previous prime is 130628777. The next prime is 130628783. The reversal of 130628779 is 977826031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130628779 - 2¹ = 130628777 is a prime.

Together with 130628777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130628777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65314389 + 65314390.

It is an arithmetic number, because the mean of its divisors is an integer number (65314390).

Almost surely, 2^130628779 is an apocalyptic number.

130628779 is a deficient number, since it is larger than the sum of its proper divisors (1).

130628779 is an equidigital number, since it uses as much as digits as its factorization.

130628779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 130628779 is about 11429.2947726445. The cubic root of 130628779 is about 507.3951237256.

The spelling of 130628779 in words is "one hundred thirty million, six hundred twenty-eight thousand, seven hundred seventy-nine".