1143959903 has 8 divisors (see below), whose sum is σ = 1211549472. Its totient is φ = 1076403456.

The previous prime is 1143959893. The next prime is 1143959939. The reversal of 1143959903 is 3099593411.

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 1143959903 - 2⁸ = 1143959647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143959953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117851 + ... + 127187.

It is an arithmetic number, because the mean of its divisors is an integer number (151443684).

Almost surely, 2^1143959903 is an apocalyptic number.

1143959903 is a deficient number, since it is larger than the sum of its proper divisors (67589569).

1143959903 is an equidigital number, since it uses as much as digits as its factorization.

1143959903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16561.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 1143959903 is about 33822.4762990530. The cubic root of 1143959903 is about 1045.8520870881.

The spelling of 1143959903 in words is "one billion, one hundred forty-three million, nine hundred fifty-nine thousand, nine hundred three".