1143155541 has 32 divisors (see below), whose sum is σ = 1692292608. Its totient is φ = 680581440.

The previous prime is 1143155527. The next prime is 1143155543. The reversal of 1143155541 is 1455513411.

It is not a de Polignac number, because 1143155541 - 2⁶ = 1143155477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143155499 and 1143155508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143155543) 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 31 ways as a sum of consecutive naturals, for example, 1509735 + ... + 1510491.

It is an arithmetic number, because the mean of its divisors is an integer number (52884144).

Almost surely, 2^1143155541 is an apocalyptic number.

1143155541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1143155541 is a deficient number, since it is larger than the sum of its proper divisors (549137067).

1143155541 is a wasteful number, since it uses less digits than its factorization.

1143155541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521.

The product of its digits is 6000, while the sum is 30.

The square root of 1143155541 is about 33810.5832691481. The cubic root of 1143155541 is about 1045.6069034001.

Adding to 1143155541 its reverse (1455513411), we get a palindrome (2598668952).

The spelling of 1143155541 in words is "one billion, one hundred forty-three million, one hundred fifty-five thousand, five hundred forty-one".