3856820133 has 4 divisors (see below), whose sum is σ = 5142426848. Its totient is φ = 2571213420.

The previous prime is 3856820111. The next prime is 3856820173. The reversal of 3856820133 is 3310286583.

3856820133 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 not a de Polignac number, because 3856820133 - 2¹² = 3856816037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3856820091 and 3856820100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856820173) 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, 642803353 + ... + 642803358.

It is an arithmetic number, because the mean of its divisors is an integer number (1285606712).

Almost surely, 2^3856820133 is an apocalyptic number.

It is an amenable number.

3856820133 is a deficient number, since it is larger than the sum of its proper divisors (1285606715).

3856820133 is a wasteful number, since it uses less digits than its factorization.

3856820133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285606714.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 3856820133 is about 62103.3021102743. The cubic root of 3856820133 is about 1568.2301357524.

The spelling of 3856820133 in words is "three billion, eight hundred fifty-six million, eight hundred twenty thousand, one hundred thirty-three".