2144541909 has 16 divisors (see below), whose sum is σ = 2960899200. Its totient is φ = 1379036736.

The previous prime is 2144541907. The next prime is 2144541923. The reversal of 2144541909 is 9091454412.

It is not a de Polignac number, because 2144541909 - 2¹ = 2144541907 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144541907) 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, 80887 + ... + 104075.

It is an arithmetic number, because the mean of its divisors is an integer number (185056200).

Almost surely, 2^2144541909 is an apocalyptic number.

2144541909 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2144541909 is a deficient number, since it is larger than the sum of its proper divisors (816357291).

2144541909 is a wasteful number, since it uses less digits than its factorization.

2144541909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24284.

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

The square root of 2144541909 is about 46309.1989673758. The cubic root of 2144541909 is about 1289.5697760092.

The spelling of 2144541909 in words is "two billion, one hundred forty-four million, five hundred forty-one thousand, nine hundred nine".