1143374785 has 16 divisors (see below), whose sum is σ = 1568620800. Its totient is φ = 783746496.

The previous prime is 1143374783. The next prime is 1143374803. The reversal of 1143374785 is 5874733411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1143374785 - 2¹ = 1143374783 is a prime.

Its product of digits (282240) is a multiple of the sum of its prime divisors (11760).

It is not an unprimeable number, because it can be changed into a prime (1143374783) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 154551 + ... + 161779.

It is an arithmetic number, because the mean of its divisors is an integer number (98038800).

Almost surely, 2^1143374785 is an apocalyptic number.

It is an amenable number.

1143374785 is a deficient number, since it is larger than the sum of its proper divisors (425246015).

1143374785 is an equidigital number, since it uses as much as digits as its factorization.

1143374785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11760.

The product of its digits is 282240, while the sum is 43.

The square root of 1143374785 is about 33813.8253529529. The cubic root of 1143374785 is about 1045.6737442273.

The spelling of 1143374785 in words is "one billion, one hundred forty-three million, three hundred seventy-four thousand, seven hundred eighty-five".