1145201089 has 2 divisors, whose sum is σ = 1145201090. Its totient is φ = 1145201088.

The previous prime is 1145201081. The next prime is 1145201093. The reversal of 1145201089 is 9801025411.

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., 1101111489 + 44089600 = 33183^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145201089 - 2³ = 1145201081 is a prime.

It is a super-2 number, since 2×1145201089² = 2622971068493571842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145201089.

It is not a weakly prime, because it can be changed into another prime (1145201081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572600544 + 572600545.

It is an arithmetic number, because the mean of its divisors is an integer number (572600545).

Almost surely, 2^1145201089 is an apocalyptic number.

It is an amenable number.

1145201089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145201089 is an equidigital number, since it uses as much as digits as its factorization.

1145201089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1145201089 is about 33840.8198629998. The cubic root of 1145201089 is about 1046.2301970124.

The spelling of 1145201089 in words is "one billion, one hundred forty-five million, two hundred one thousand, eighty-nine".