2143503453 has 64 divisors (see below), whose sum is σ = 3628154880. Its totient is φ = 1095648768.

The previous prime is 2143503443. The next prime is 2143503511. The reversal of 2143503453 is 3543053412.

It is not a de Polignac number, because 2143503453 - 2²⁴ = 2126726237 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143503453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143503403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1174900 + ... + 1176722.

It is an arithmetic number, because the mean of its divisors is an integer number (56689920).

Almost surely, 2^2143503453 is an apocalyptic number.

It is an amenable number.

2143503453 is a deficient number, since it is larger than the sum of its proper divisors (1484651427).

2143503453 is a wasteful number, since it uses less digits than its factorization.

2143503453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 2143503453 is about 46297.9854097346. The cubic root of 2143503453 is about 1289.3615920487.

Adding to 2143503453 its reverse (3543053412), we get a palindrome (5686556865).

The spelling of 2143503453 in words is "two billion, one hundred forty-three million, five hundred three thousand, four hundred fifty-three".