2143545441 has 16 divisors (see below), whose sum is σ = 2882331648. Its totient is φ = 1416944000.

The previous prime is 2143545431. The next prime is 2143545541. The reversal of 2143545441 is 1445453412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2143545441 - 2¹¹ = 2143543393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2143545431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175741 + ... + 187541.

It is an arithmetic number, because the mean of its divisors is an integer number (180145728).

Almost surely, 2^2143545441 is an apocalyptic number.

It is an amenable number.

2143545441 is a deficient number, since it is larger than the sum of its proper divisors (738786207).

2143545441 is a wasteful number, since it uses less digits than its factorization.

2143545441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312.

The product of its digits is 38400, while the sum is 33.

The square root of 2143545441 is about 46298.4388613698. The cubic root of 2143545441 is about 1289.3700108768.

Adding to 2143545441 its reverse (1445453412), we get a palindrome (3588998853).

The spelling of 2143545441 in words is "two billion, one hundred forty-three million, five hundred forty-five thousand, four hundred forty-one".