385757538 has 16 divisors (see below), whose sum is σ = 771919680. Its totient is φ = 128518416.

The previous prime is 385757531. The next prime is 385757549. The reversal of 385757538 is 835757583.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (385757531) 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, 3670 + ... + 28017.

It is an arithmetic number, because the mean of its divisors is an integer number (48244980).

Almost surely, 2^385757538 is an apocalyptic number.

385757538 is an abundant number, since it is smaller than the sum of its proper divisors (386162142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385757538 is a wasteful number, since it uses less digits than its factorization.

385757538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33721.

The product of its digits is 3528000, while the sum is 51.

The square root of 385757538 is about 19640.7112396675. The cubic root of 385757538 is about 727.9554588234.

The spelling of 385757538 in words is "three hundred eighty-five million, seven hundred fifty-seven thousand, five hundred thirty-eight".