2003198453 has 2 divisors, whose sum is σ = 2003198454. Its totient is φ = 2003198452.

The previous prime is 2003198437. The next prime is 2003198479. The reversal of 2003198453 is 3548913002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1985415364 + 17783089 = 44558^2 + 4217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003198453 - 2⁴ = 2003198437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003198423) 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 as a sum of consecutive naturals, namely, 1001599226 + 1001599227.

It is an arithmetic number, because the mean of its divisors is an integer number (1001599227).

Almost surely, 2^2003198453 is an apocalyptic number.

It is an amenable number.

2003198453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003198453 is an equidigital number, since it uses as much as digits as its factorization.

2003198453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2003198453 is about 44757.1050560690. The cubic root of 2003198453 is about 1260.5923252251.

The spelling of 2003198453 in words is "two billion, three million, one hundred ninety-eight thousand, four hundred fifty-three".