1143932865 has 8 divisors (see below), whose sum is σ = 1830292608. Its totient is φ = 610097520.

The previous prime is 1143932843. The next prime is 1143932893. The reversal of 1143932865 is 5682393411.

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

It is not a de Polignac number, because 1143932865 - 2⁹ = 1143932353 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38131081 + ... + 38131110.

It is an arithmetic number, because the mean of its divisors is an integer number (228786576).

Almost surely, 2^1143932865 is an apocalyptic number.

1143932865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143932865 is a deficient number, since it is larger than the sum of its proper divisors (686359743).

1143932865 is an equidigital number, since it uses as much as digits as its factorization.

1143932865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76262199.

The product of its digits is 155520, while the sum is 42.

The square root of 1143932865 is about 33822.0765920722. The cubic root of 1143932865 is about 1045.8438472971.

The spelling of 1143932865 in words is "one billion, one hundred forty-three million, nine hundred thirty-two thousand, eight hundred sixty-five".