3888538857 has 24 divisors (see below), whose sum is σ = 6423580800. Its totient is φ = 2220497280.

The previous prime is 3888538853. The next prime is 3888538859. The reversal of 3888538857 is 7588358883.

It is not a de Polignac number, because 3888538857 - 2² = 3888538853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 3888538794 and 3888538803.

It is not an unprimeable number, because it can be changed into a prime (3888538853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74769 + ... + 115617.

It is an arithmetic number, because the mean of its divisors is an integer number (267649200).

Almost surely, 2^3888538857 is an apocalyptic number.

It is an amenable number.

3888538857 is a deficient number, since it is larger than the sum of its proper divisors (2535041943).

3888538857 is a wasteful number, since it uses less digits than its factorization.

3888538857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42373 (or 42370 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 63.

The square root of 3888538857 is about 62358.1498843575. The cubic root of 3888538857 is about 1572.5174774517.

The spelling of 3888538857 in words is "three billion, eight hundred eighty-eight million, five hundred thirty-eight thousand, eight hundred fifty-seven".