1064043809 has 2 divisors, whose sum is σ = 1064043810. Its totient is φ = 1064043808.

The previous prime is 1064043769. The next prime is 1064043829. The reversal of 1064043809 is 9083404601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982195600 + 81848209 = 31340^2 + 9047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1064043809 - 2²⁴ = 1047266593 is a prime.

It is a super-2 number, since 2×1064043809² = 2264378454942456962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1064043829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532021904 + 532021905.

It is an arithmetic number, because the mean of its divisors is an integer number (532021905).

Almost surely, 2^1064043809 is an apocalyptic number.

It is an amenable number.

1064043809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064043809 is an equidigital number, since it uses as much as digits as its factorization.

1064043809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1064043809 is about 32619.6843792211. The cubic root of 1064043809 is about 1020.9077555908.

The spelling of 1064043809 in words is "one billion, sixty-four million, forty-three thousand, eight hundred nine".