2153442133 has 4 divisors (see below), whose sum is σ = 2155129740. Its totient is φ = 2151754528.

The previous prime is 2153442127. The next prime is 2153442163. The reversal of 2153442133 is 3312443512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 557998884 + 1595443249 = 23622^2 + 39943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153442133 - 2⁹ = 2153441621 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 (2153442103) 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, 841888 + ... + 844441.

It is an arithmetic number, because the mean of its divisors is an integer number (538782435).

Almost surely, 2^2153442133 is an apocalyptic number.

It is an amenable number.

2153442133 is a deficient number, since it is larger than the sum of its proper divisors (1687607).

2153442133 is a wasteful number, since it uses less digits than its factorization.

2153442133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687606.

The product of its digits is 8640, while the sum is 28.

The square root of 2153442133 is about 46405.1951078756. The cubic root of 2153442133 is about 1291.3512937789.

Adding to 2153442133 its reverse (3312443512), we get a palindrome (5465885645).

The spelling of 2153442133 in words is "two billion, one hundred fifty-three million, four hundred forty-two thousand, one hundred thirty-three".