2133493553 has 4 divisors (see below), whose sum is σ = 2133587700. Its totient is φ = 2133399408.

The previous prime is 2133493511. The next prime is 2133493559. The reversal of 2133493553 is 3553943312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1895470369 + 238023184 = 43537^2 + 15428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133493553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133493559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9923 + ... + 66071.

It is an arithmetic number, because the mean of its divisors is an integer number (533396925).

Almost surely, 2^2133493553 is an apocalyptic number.

It is an amenable number.

2133493553 is a deficient number, since it is larger than the sum of its proper divisors (94147).

2133493553 is an equidigital number, since it uses as much as digits as its factorization.

2133493553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94146.

The product of its digits is 145800, while the sum is 38.

The square root of 2133493553 is about 46189.7559313751. The cubic root of 2133493553 is about 1287.3514058315.

The spelling of 2133493553 in words is "two billion, one hundred thirty-three million, four hundred ninety-three thousand, five hundred fifty-three".