1143687244 has 18 divisors (see below), whose sum is σ = 2328220860. Its totient is φ = 490151592.

The previous prime is 1143687221. The next prime is 1143687287. The reversal of 1143687244 is 4427863411.

It is a junction number, because it is equal to n+sod(n) for n = 1143687197 and 1143687206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2917374 + ... + 2917765.

Almost surely, 2^1143687244 is an apocalyptic number.

1143687244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1143687244 is an abundant number, since it is smaller than the sum of its proper divisors (1184533616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143687244 is a wasteful number, since it uses less digits than its factorization.

1143687244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835157 (or 5835148 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 1143687244 is about 33818.4453220428. The cubic root of 1143687244 is about 1045.7689887084.

The spelling of 1143687244 in words is "one billion, one hundred forty-three million, six hundred eighty-seven thousand, two hundred forty-four".