3858738857 has 8 divisors (see below), whose sum is σ = 3987389952. Its totient is φ = 3734234580.

The previous prime is 3858738841. The next prime is 3858738883. The reversal of 3858738857 is 7588378583.

It is not a de Polignac number, because 3858738857 - 2⁴ = 3858738841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3858738857.

It is not an unprimeable number, because it can be changed into a prime (3858738887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34973 + ... + 94554.

It is an arithmetic number, because the mean of its divisors is an integer number (498423744).

Almost surely, 2^3858738857 is an apocalyptic number.

It is an amenable number.

3858738857 is a deficient number, since it is larger than the sum of its proper divisors (128651095).

3858738857 is an frugal number, since it uses more digits than its factorization.

3858738857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129620 (or 129558 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 62.

The square root of 3858738857 is about 62118.7480314921. The cubic root of 3858738857 is about 1568.4901515039.

The spelling of 3858738857 in words is "three billion, eight hundred fifty-eight million, seven hundred thirty-eight thousand, eight hundred fifty-seven".