1143747315 has 12 divisors (see below), whose sum is σ = 1982495424. Its totient is φ = 609998544.

The previous prime is 1143747299. The next prime is 1143747347. The reversal of 1143747315 is 5137473411.

It is a happy number.

It is not a de Polignac number, because 1143747315 - 2⁴ = 1143747299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143747315.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12708259 + ... + 12708348.

It is an arithmetic number, because the mean of its divisors is an integer number (165207952).

Almost surely, 2^1143747315 is an apocalyptic number.

1143747315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143747315 is a deficient number, since it is larger than the sum of its proper divisors (838748109).

1143747315 is a wasteful number, since it uses less digits than its factorization.

1143747315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25416618 (or 25416615 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 1143747315 is about 33819.3334499662. Note that the first 3 decimals coincide. The cubic root of 1143747315 is about 1045.7872977026.

The spelling of 1143747315 in words is "one billion, one hundred forty-three million, seven hundred forty-seven thousand, three hundred fifteen".