1046664809 has 2 divisors, whose sum is σ = 1046664810. Its totient is φ = 1046664808.

The previous prime is 1046664803. The next prime is 1046664833. The reversal of 1046664809 is 9084666401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046328409 + 336400 = 32347^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046664809 - 2¹⁶ = 1046599273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1046664809.

It is not a weakly prime, because it can be changed into another prime (1046664803) 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, 523332404 + 523332405.

It is an arithmetic number, because the mean of its divisors is an integer number (523332405).

Almost surely, 2^1046664809 is an apocalyptic number.

It is an amenable number.

1046664809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046664809 is an equidigital number, since it uses as much as digits as its factorization.

1046664809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1046664809 is about 32352.1994460964. The cubic root of 1046664809 is about 1015.3190642757.

The spelling of 1046664809 in words is "one billion, forty-six million, six hundred sixty-four thousand, eight hundred nine".