3856333749 has 4 divisors (see below), whose sum is σ = 5141778336. Its totient is φ = 2570889164.

The previous prime is 3856333681. The next prime is 3856333763. The reversal of 3856333749 is 9473336583.

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 not a de Polignac number, because 3856333749 - 2²⁰ = 3855285173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856313749) 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, 642722289 + ... + 642722294.

It is an arithmetic number, because the mean of its divisors is an integer number (1285444584).

Almost surely, 2^3856333749 is an apocalyptic number.

It is an amenable number.

3856333749 is a deficient number, since it is larger than the sum of its proper divisors (1285444587).

3856333749 is a wasteful number, since it uses less digits than its factorization.

3856333749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285444586.

The product of its digits is 4898880, while the sum is 51.

The square root of 3856333749 is about 62099.3860597671. The cubic root of 3856333749 is about 1568.1642097576.

The spelling of 3856333749 in words is "three billion, eight hundred fifty-six million, three hundred thirty-three thousand, seven hundred forty-nine".