3857238755 has 4 divisors (see below), whose sum is σ = 4628686512. Its totient is φ = 3085791000.

The previous prime is 3857238733. The next prime is 3857238799. The reversal of 3857238755 is 5578327583.

3857238755 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 an emirpimes, since its reverse is a distinct semiprime: 5578327583 = 659 ⋅8464837.

It is not a de Polignac number, because 3857238755 - 2¹² = 3857234659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3857238697 and 3857238706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385723871 + ... + 385723880.

It is an arithmetic number, because the mean of its divisors is an integer number (1157171628).

Almost surely, 2^3857238755 is an apocalyptic number.

3857238755 is a deficient number, since it is larger than the sum of its proper divisors (771447757).

3857238755 is an equidigital number, since it uses as much as digits as its factorization.

3857238755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771447756.

The product of its digits is 7056000, while the sum is 53.

The square root of 3857238755 is about 62106.6723871115. The cubic root of 3857238755 is about 1568.2868726378.

The spelling of 3857238755 in words is "three billion, eight hundred fifty-seven million, two hundred thirty-eight thousand, seven hundred fifty-five".