1028620907 has 2 divisors, whose sum is σ = 1028620908. Its totient is φ = 1028620906.

The previous prime is 1028620877. The next prime is 1028620913. The reversal of 1028620907 is 7090268201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028620907 - 2¹⁶ = 1028555371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028620987) 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, 514310453 + 514310454.

It is an arithmetic number, because the mean of its divisors is an integer number (514310454).

Almost surely, 2^1028620907 is an apocalyptic number.

1028620907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028620907 is an equidigital number, since it uses as much as digits as its factorization.

1028620907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1028620907 is about 32072.1204007468. The cubic root of 1028620907 is about 1009.4507051398.

The spelling of 1028620907 in words is "one billion, twenty-eight million, six hundred twenty thousand, nine hundred seven".