1450769809 has 2 divisors, whose sum is σ = 1450769810. Its totient is φ = 1450769808.

The previous prime is 1450769791. The next prime is 1450769839. The reversal of 1450769809 is 9089670541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1349827600 + 100942209 = 36740^2 + 10047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1450769809 - 2¹³ = 1450761617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1450769839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725384904 + 725384905.

It is an arithmetic number, because the mean of its divisors is an integer number (725384905).

Almost surely, 2^1450769809 is an apocalyptic number.

It is an amenable number.

1450769809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1450769809 is an equidigital number, since it uses as much as digits as its factorization.

1450769809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1450769809 is about 38088.9722754500. The cubic root of 1450769809 is about 1132.0514615007.

The spelling of 1450769809 in words is "one billion, four hundred fifty million, seven hundred sixty-nine thousand, eight hundred nine".