1145875287 has 4 divisors (see below), whose sum is σ = 1527833720. Its totient is φ = 763916856.

The previous prime is 1145875219. The next prime is 1145875303. The reversal of 1145875287 is 7825785411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1145875287 - 2¹⁰ = 1145874263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145875217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190979212 + ... + 190979217.

It is an arithmetic number, because the mean of its divisors is an integer number (381958430).

Almost surely, 2^1145875287 is an apocalyptic number.

1145875287 is a deficient number, since it is larger than the sum of its proper divisors (381958433).

1145875287 is an equidigital number, since it uses as much as digits as its factorization.

1145875287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381958432.

The product of its digits is 627200, while the sum is 48.

The square root of 1145875287 is about 33850.7797103700. The cubic root of 1145875287 is about 1046.4354674923.

The spelling of 1145875287 in words is "one billion, one hundred forty-five million, eight hundred seventy-five thousand, two hundred eighty-seven".