1131548943 has 16 divisors (see below), whose sum is σ = 1724769536. Its totient is φ = 646410240.

The previous prime is 1131548921. The next prime is 1131548969. The reversal of 1131548943 is 3498451311.

It is not a de Polignac number, because 1131548943 - 2¹⁰ = 1131547919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131546943) 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 15 ways as a sum of consecutive naturals, for example, 99855 + ... + 110607.

It is an arithmetic number, because the mean of its divisors is an integer number (107798096).

Almost surely, 2^1131548943 is an apocalyptic number.

1131548943 is a deficient number, since it is larger than the sum of its proper divisors (593220593).

1131548943 is a wasteful number, since it uses less digits than its factorization.

1131548943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15774.

The product of its digits is 51840, while the sum is 39.

The square root of 1131548943 is about 33638.5038757671. The cubic root of 1131548943 is about 1042.0561340984.

The spelling of 1131548943 in words is "one billion, one hundred thirty-one million, five hundred forty-eight thousand, nine hundred forty-three".