1143183487 has 8 divisors (see below), whose sum is σ = 1175697200. Its totient is φ = 1110754944.

The previous prime is 1143183473. The next prime is 1143183499. The reversal of 1143183487 is 7843813411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143183487 - 2¹⁵ = 1143150719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143183407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6439 + ... + 48247.

It is an arithmetic number, because the mean of its divisors is an integer number (146962150).

Almost surely, 2^1143183487 is an apocalyptic number.

1143183487 is a deficient number, since it is larger than the sum of its proper divisors (32513713).

1143183487 is an equidigital number, since it uses as much as digits as its factorization.

1143183487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42585.

The product of its digits is 64512, while the sum is 40.

The square root of 1143183487 is about 33810.9965395875. The cubic root of 1143183487 is about 1045.6154237607.

Adding to 1143183487 its reverse (7843813411), we get a palindrome (8986996898).

The spelling of 1143183487 in words is "one billion, one hundred forty-three million, one hundred eighty-three thousand, four hundred eighty-seven".