1143078646 has 16 divisors (see below), whose sum is σ = 1821735360. Its totient is φ = 536396040.

The previous prime is 1143078641. The next prime is 1143078649. The reversal of 1143078646 is 6468703411.

It is a junction number, because it is equal to n+sod(n) for n = 1143078599 and 1143078608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143078641) 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, 136500 + ... + 144631.

It is an arithmetic number, because the mean of its divisors is an integer number (113858460).

Almost surely, 2^1143078646 is an apocalyptic number.

1143078646 is a deficient number, since it is larger than the sum of its proper divisors (678656714).

1143078646 is a wasteful number, since it uses less digits than its factorization.

1143078646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281259.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1143078646 is about 33809.4461060811. The cubic root of 1143078646 is about 1045.5834584291.

The spelling of 1143078646 in words is "one billion, one hundred forty-three million, seventy-eight thousand, six hundred forty-six".