2143204453 has 8 divisors (see below), whose sum is σ = 2311368696. Its totient is φ = 1975512000.

The previous prime is 2143204421. The next prime is 2143204477. The reversal of 2143204453 is 3544023412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110817729 + 2032386724 = 10527^2 + 45082^2 .

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 2143204453 - 2⁵ = 2143204421 is a prime.

It is a super-3 number, since 3×2143204453³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143204853) 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, 108478 + ... + 126703.

It is an arithmetic number, because the mean of its divisors is an integer number (288921087).

Almost surely, 2^2143204453 is an apocalyptic number.

It is an amenable number.

2143204453 is a deficient number, since it is larger than the sum of its proper divisors (168164243).

2143204453 is a wasteful number, since it uses less digits than its factorization.

2143204453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235895.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2143204453 is about 46294.7562149322. The cubic root of 2143204453 is about 1289.3016377027.

Adding to 2143204453 its reverse (3544023412), we get a palindrome (5687227865).

The spelling of 2143204453 in words is "two billion, one hundred forty-three million, two hundred four thousand, four hundred fifty-three".