3813121033 has 4 divisors (see below), whose sum is σ = 3978908928. Its totient is φ = 3647333140.

The previous prime is 3813121003. The next prime is 3813121043. The reversal of 3813121033 is 3301213183.

3813121033 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-3813121033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3813120989 and 3813121007.

It is not an unprimeable number, because it can be changed into a prime (3813121003) 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, 82893913 + ... + 82893958.

It is an arithmetic number, because the mean of its divisors is an integer number (994727232).

Almost surely, 2^3813121033 is an apocalyptic number.

It is an amenable number.

3813121033 is a deficient number, since it is larger than the sum of its proper divisors (165787895).

3813121033 is a wasteful number, since it uses less digits than its factorization.

3813121033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165787894.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3813121033 is about 61750.4739495982. The cubic root of 3813121033 is about 1562.2847620574.

The spelling of 3813121033 in words is "three billion, eight hundred thirteen million, one hundred twenty-one thousand, thirty-three".