1155844143 has 24 divisors (see below), whose sum is σ = 1689721488. Its totient is φ = 761283072.

The previous prime is 1155844111. The next prime is 1155844187. The reversal of 1155844143 is 3414485511.

It is not a de Polignac number, because 1155844143 - 2⁵ = 1155844111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155844098 and 1155844107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155844103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 883696 + ... + 885002.

It is an arithmetic number, because the mean of its divisors is an integer number (70405062).

Almost surely, 2^1155844143 is an apocalyptic number.

1155844143 is a deficient number, since it is larger than the sum of its proper divisors (533877345).

1155844143 is a wasteful number, since it uses less digits than its factorization.

1155844143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423 (or 2420 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 1155844143 is about 33997.7079080340. The cubic root of 1155844143 is about 1049.4612937301.

The spelling of 1155844143 in words is "one billion, one hundred fifty-five million, eight hundred forty-four thousand, one hundred forty-three".