1024128913 has 2 divisors, whose sum is σ = 1024128914. Its totient is φ = 1024128912.

The previous prime is 1024128877. The next prime is 1024128953. The reversal of 1024128913 is 3198214201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 920333569 + 103795344 = 30337^2 + 10188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024128913 - 2¹⁷ = 1023997841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1024128953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512064456 + 512064457.

It is an arithmetic number, because the mean of its divisors is an integer number (512064457).

Almost surely, 2^1024128913 is an apocalyptic number.

It is an amenable number.

1024128913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024128913 is an equidigital number, since it uses as much as digits as its factorization.

1024128913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1024128913 is about 32002.0142022342. The cubic root of 1024128913 is about 1007.9791350688.

The spelling of 1024128913 in words is "one billion, twenty-four million, one hundred twenty-eight thousand, nine hundred thirteen".