1143543878 has 4 divisors (see below), whose sum is σ = 1715315820. Its totient is φ = 571771938.

The previous prime is 1143543857. The next prime is 1143543889. The reversal of 1143543878 is 8783453411.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1143543878² = 2615385201822557768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285885968 + ... + 285885971.

It is an arithmetic number, because the mean of its divisors is an integer number (428828955).

Almost surely, 2^1143543878 is an apocalyptic number.

1143543878 is a deficient number, since it is larger than the sum of its proper divisors (571771942).

1143543878 is an equidigital number, since it uses as much as digits as its factorization.

1143543878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571771941.

The product of its digits is 322560, while the sum is 44.

The square root of 1143543878 is about 33816.3256135258. The cubic root of 1143543878 is about 1045.7252897040.

The spelling of 1143543878 in words is "one billion, one hundred forty-three million, five hundred forty-three thousand, eight hundred seventy-eight".