1445999609 has 2 divisors, whose sum is σ = 1445999610. Its totient is φ = 1445999608.

The previous prime is 1445999543. The next prime is 1445999623. The reversal of 1445999609 is 9069995441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727920400 + 718079209 = 26980^2 + 26797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445999609 - 2¹⁶ = 1445934073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1445999699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722999804 + 722999805.

It is an arithmetic number, because the mean of its divisors is an integer number (722999805).

Almost surely, 2^1445999609 is an apocalyptic number.

It is an amenable number.

1445999609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445999609 is an equidigital number, since it uses as much as digits as its factorization.

1445999609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 1445999609 is about 38026.3015424850. The cubic root of 1445999609 is about 1130.8093528190.

The spelling of 1445999609 in words is "one billion, four hundred forty-five million, nine hundred ninety-nine thousand, six hundred nine".