1146743809 has 2 divisors, whose sum is σ = 1146743810. Its totient is φ = 1146743808.

The previous prime is 1146743771. The next prime is 1146743863. The reversal of 1146743809 is 9083476411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711395584 + 435348225 = 26672^2 + 20865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146743809 - 2⁷ = 1146743681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1146747809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573371904 + 573371905.

It is an arithmetic number, because the mean of its divisors is an integer number (573371905).

Almost surely, 2^1146743809 is an apocalyptic number.

It is an amenable number.

1146743809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146743809 is an equidigital number, since it uses as much as digits as its factorization.

1146743809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1146743809 is about 33863.6059656972. The cubic root of 1146743809 is about 1046.6997844178.

The spelling of 1146743809 in words is "one billion, one hundred forty-six million, seven hundred forty-three thousand, eight hundred nine".