1145287287 has 12 divisors (see below), whose sum is σ = 1663548120. Its totient is φ = 759258288.

The previous prime is 1145287237. The next prime is 1145287289. The reversal of 1145287287 is 7827825411.

1145287287 is a `hidden beast` number, since 114 + 528 + 7 + 2 + 8 + 7 = 666.

It is not a de Polignac number, because 1145287287 - 2⁶ = 1145287223 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145287289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353848 + ... + 357069.

It is an arithmetic number, because the mean of its divisors is an integer number (138629010).

Almost surely, 2^1145287287 is an apocalyptic number.

1145287287 is a deficient number, since it is larger than the sum of its proper divisors (518260833).

1145287287 is a wasteful number, since it uses less digits than its factorization.

1145287287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711102 (or 711099 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 1145287287 is about 33842.0934192907. The cubic root of 1145287287 is about 1046.2564458778.

The spelling of 1145287287 in words is "one billion, one hundred forty-five million, two hundred eighty-seven thousand, two hundred eighty-seven".