1073505809 has 2 divisors, whose sum is σ = 1073505810. Its totient is φ = 1073505808.

The previous prime is 1073505791. The next prime is 1073505859. The reversal of 1073505809 is 9085053701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1069617025 + 3888784 = 32705^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073505809 - 2⁸ = 1073505553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1073505859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536752904 + 536752905.

It is an arithmetic number, because the mean of its divisors is an integer number (536752905).

Almost surely, 2^1073505809 is an apocalyptic number.

It is an amenable number.

1073505809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073505809 is an equidigital number, since it uses as much as digits as its factorization.

1073505809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1073505809 is about 32764.3984989806. The cubic root of 1073505809 is about 1023.9249673543.

The spelling of 1073505809 in words is "one billion, seventy-three million, five hundred five thousand, eight hundred nine".