1020838717 has 2 divisors, whose sum is σ = 1020838718. Its totient is φ = 1020838716.

The previous prime is 1020838697. The next prime is 1020838727. The reversal of 1020838717 is 7178380201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531809721 + 489028996 = 23061^2 + 22114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020838717 is a prime.

It is a super-2 number, since 2×1020838717² = 2084223372252412178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020838727) 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, 510419358 + 510419359.

It is an arithmetic number, because the mean of its divisors is an integer number (510419359).

Almost surely, 2^1020838717 is an apocalyptic number.

It is an amenable number.

1020838717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020838717 is an equidigital number, since it uses as much as digits as its factorization.

1020838717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1020838717 is about 31950.5667711858. The cubic root of 1020838717 is about 1006.8985397163.

The spelling of 1020838717 in words is "one billion, twenty million, eight hundred thirty-eight thousand, seven hundred seventeen".