1036398809 has 2 divisors, whose sum is σ = 1036398810. Its totient is φ = 1036398808.

The previous prime is 1036398793. The next prime is 1036398817. The reversal of 1036398809 is 9088936301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013021584 + 23377225 = 31828^2 + 4835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1036398809 - 2⁴ = 1036398793 is a prime.

It is a super-3 number, since 3×1036398809³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1036398889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 518199404 + 518199405.

It is an arithmetic number, because the mean of its divisors is an integer number (518199405).

Almost surely, 2^1036398809 is an apocalyptic number.

It is an amenable number.

1036398809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1036398809 is an equidigital number, since it uses as much as digits as its factorization.

1036398809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1036398809 is about 32193.1484791407. The cubic root of 1036398809 is about 1011.9886346086.

The spelling of 1036398809 in words is "one billion, thirty-six million, three hundred ninety-eight thousand, eight hundred nine".