206144453 has 4 divisors (see below), whose sum is σ = 209047968. Its totient is φ = 203240940.

The previous prime is 206144429. The next prime is 206144459. The reversal of 206144453 is 354441602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206144453 - 2¹⁰ = 206143429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206144459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451651 + ... + 1451792.

It is an arithmetic number, because the mean of its divisors is an integer number (52261992).

Almost surely, 2^206144453 is an apocalyptic number.

It is an amenable number.

206144453 is a deficient number, since it is larger than the sum of its proper divisors (2903515).

206144453 is an equidigital number, since it uses as much as digits as its factorization.

206144453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903514.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 206144453 is about 14357.7314712318. The cubic root of 206144453 is about 590.7320731682.

The spelling of 206144453 in words is "two hundred six million, one hundred forty-four thousand, four hundred fifty-three".