2133903645 has 12 divisors (see below), whose sum is σ = 3698766396. Its totient is φ = 1138081920.

The previous prime is 2133903601. The next prime is 2133903691. The reversal of 2133903645 is 5463093312.

It is a happy number.

2133903645 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 9 + 0 + 3 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1662926841 + 470976804 = 40779^2 + 21702^2 .

It is not a de Polignac number, because 2133903645 - 2⁶ = 2133903581 is a prime.

It is a super-2 number, since 2×2133903645² = 9107089532288572050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23709996 + ... + 23710085.

It is an arithmetic number, because the mean of its divisors is an integer number (308230533).

Almost surely, 2^2133903645 is an apocalyptic number.

It is an amenable number.

2133903645 is a deficient number, since it is larger than the sum of its proper divisors (1564862751).

2133903645 is a wasteful number, since it uses less digits than its factorization.

2133903645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47420092 (or 47420089 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 2133903645 is about 46194.1949275014. The cubic root of 2133903645 is about 1287.4338838075.

Adding to 2133903645 its reverse (5463093312), we get a palindrome (7596996957).

The spelling of 2133903645 in words is "two billion, one hundred thirty-three million, nine hundred three thousand, six hundred forty-five".