1145888089 has 2 divisors, whose sum is σ = 1145888090. Its totient is φ = 1145888088.

The previous prime is 1145888087. The next prime is 1145888101. The reversal of 1145888089 is 9808885411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799928089 + 345960000 = 28283^2 + 18600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145888089 - 2¹ = 1145888087 is a prime.

Together with 1145888087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1145888087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572944044 + 572944045.

It is an arithmetic number, because the mean of its divisors is an integer number (572944045).

Almost surely, 2^1145888089 is an apocalyptic number.

It is an amenable number.

1145888089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145888089 is an equidigital number, since it uses as much as digits as its factorization.

1145888089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 737280, while the sum is 52.

The square root of 1145888089 is about 33850.9688044523. The cubic root of 1145888089 is about 1046.4393644891.

The spelling of 1145888089 in words is "one billion, one hundred forty-five million, eight hundred eighty-eight thousand, eighty-nine".