385778522 has 16 divisors (see below), whose sum is σ = 586776960. Its totient is φ = 190195392.

The previous prime is 385778509. The next prime is 385778543. The reversal of 385778522 is 225877583.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96479 + ... + 100397.

It is an arithmetic number, because the mean of its divisors is an integer number (36673560).

Almost surely, 2^385778522 is an apocalyptic number.

385778522 is a deficient number, since it is larger than the sum of its proper divisors (200998438).

385778522 is a wasteful number, since it uses less digits than its factorization.

385778522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597.

The product of its digits is 940800, while the sum is 47.

The square root of 385778522 is about 19641.2454289437. The cubic root of 385778522 is about 727.9686580819.

The spelling of 385778522 in words is "three hundred eighty-five million, seven hundred seventy-eight thousand, five hundred twenty-two".