2011091543 has 8 divisors (see below), whose sum is σ = 2050697376. Its totient is φ = 1971799200.

The previous prime is 2011091531. The next prime is 2011091557. The reversal of 2011091543 is 3451901102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011091543 - 2²⁴ = 1994314327 is a prime.

It is a super-2 number, since 2×2011091543² = 8088978388652241698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011091513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65396 + ... + 91097.

It is an arithmetic number, because the mean of its divisors is an integer number (256337172).

Almost surely, 2^2011091543 is an apocalyptic number.

2011091543 is a deficient number, since it is larger than the sum of its proper divisors (39605833).

2011091543 is a wasteful number, since it uses less digits than its factorization.

2011091543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156745.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2011091543 is about 44845.1953167784. The cubic root of 2011091543 is about 1262.2458356832.

Adding to 2011091543 its reverse (3451901102), we get a palindrome (5462992645).

The spelling of 2011091543 in words is "two billion, eleven million, ninety-one thousand, five hundred forty-three".