1145266609 has 2 divisors, whose sum is σ = 1145266610. Its totient is φ = 1145266608.

The previous prime is 1145266589. The next prime is 1145266613. The reversal of 1145266609 is 9066625411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132995600 + 12271009 = 33660^2 + 3503^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145266609 - 2¹³ = 1145258417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145266649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572633304 + 572633305.

It is an arithmetic number, because the mean of its divisors is an integer number (572633305).

Almost surely, 2^1145266609 is an apocalyptic number.

It is an amenable number.

1145266609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145266609 is an equidigital number, since it uses as much as digits as its factorization.

1145266609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1145266609 is about 33841.7879108064. The cubic root of 1145266609 is about 1046.2501491692.

The spelling of 1145266609 in words is "one billion, one hundred forty-five million, two hundred sixty-six thousand, six hundred nine".