1143278830 has 16 divisors (see below), whose sum is σ = 2166212880. Its totient is φ = 433242432.

The previous prime is 1143278819. The next prime is 1143278831. The reversal of 1143278830 is 388723411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143278830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143278831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3008439 + ... + 3008818.

It is an arithmetic number, because the mean of its divisors is an integer number (135388305).

Almost surely, 2^1143278830 is an apocalyptic number.

1143278830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143278830 is a deficient number, since it is larger than the sum of its proper divisors (1022934050).

1143278830 is a wasteful number, since it uses less digits than its factorization.

1143278830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017283.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1143278830 is about 33812.4064508872. The cubic root of 1143278830 is about 1045.6444915179.

The spelling of 1143278830 in words is "one billion, one hundred forty-three million, two hundred seventy-eight thousand, eight hundred thirty".