2144640523 has 16 divisors (see below), whose sum is σ = 2313780480. Its totient is φ = 1981282464.

The previous prime is 2144640521. The next prime is 2144640527. The reversal of 2144640523 is 3250464412.

It is a cyclic number.

It is not a de Polignac number, because 2144640523 - 2¹ = 2144640521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2144640521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605265 + ... + 608797.

It is an arithmetic number, because the mean of its divisors is an integer number (144611280).

Almost surely, 2^2144640523 is an apocalyptic number.

2144640523 is a deficient number, since it is larger than the sum of its proper divisors (169139957).

2144640523 is a wasteful number, since it uses less digits than its factorization.

2144640523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 2144640523 is about 46310.2636895969. The cubic root of 2144640523 is about 1289.5895421085.

The spelling of 2144640523 in words is "two billion, one hundred forty-four million, six hundred forty thousand, five hundred twenty-three".