1020358709 has 2 divisors, whose sum is σ = 1020358710. Its totient is φ = 1020358708.

The previous prime is 1020358667. The next prime is 1020358711. The reversal of 1020358709 is 9078530201.

1020358709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 823517809 + 196840900 = 28697^2 + 14030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020358709 is a prime.

It is a super-2 number, since 2×1020358709² = 2082263790064293362, which contains 22 as substring.

Together with 1020358711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020358609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510179354 + 510179355.

It is an arithmetic number, because the mean of its divisors is an integer number (510179355).

Almost surely, 2^1020358709 is an apocalyptic number.

It is an amenable number.

1020358709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020358709 is an equidigital number, since it uses as much as digits as its factorization.

1020358709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1020358709 is about 31943.0541589248. The cubic root of 1020358709 is about 1006.7406972417.

The spelling of 1020358709 in words is "one billion, twenty million, three hundred fifty-eight thousand, seven hundred nine".