1020098709 has 36 divisors (see below), whose sum is σ = 1719686124. Its totient is φ = 580995072.

The previous prime is 1020098699. The next prime is 1020098743. The reversal of 1020098709 is 9078900201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 177822225 + 842276484 = 13335^2 + 29022^2 .

It is not a de Polignac number, because 1020098709 - 2⁹ = 1020098197 is a prime.

It is a super-2 number, since 2×1020098709² = 2081202752206933362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020098309) 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 in 35 ways as a sum of consecutive naturals, for example, 136149 + ... + 143445.

It is an arithmetic number, because the mean of its divisors is an integer number (47769059).

Almost surely, 2^1020098709 is an apocalyptic number.

It is an amenable number.

1020098709 is a deficient number, since it is larger than the sum of its proper divisors (699587415).

1020098709 is a wasteful number, since it uses less digits than its factorization.

1020098709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634 (or 7624 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1020098709 is about 31938.9841572959. The cubic root of 1020098709 is about 1006.6551799902.

The spelling of 1020098709 in words is "one billion, twenty million, ninety-eight thousand, seven hundred nine".