386778116 has 12 divisors (see below), whose sum is σ = 678427932. Its totient is φ = 192941568.

The previous prime is 386778089. The next prime is 386778121. The reversal of 386778116 is 611877683.

It can be written as a sum of positive squares in 2 ways, for example, as 240126016 + 146652100 = 15496^2 + 12110^2 .

It is a super-2 number, since 2×386778116² = 299194622033018912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109925 + ... + 113388.

It is an arithmetic number, because the mean of its divisors is an integer number (56535661).

Almost surely, 2^386778116 is an apocalyptic number.

It is an amenable number.

386778116 is a deficient number, since it is larger than the sum of its proper divisors (291649816).

386778116 is a wasteful number, since it uses less digits than its factorization.

386778116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223750 (or 223748 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 386778116 is about 19666.6752655348. The cubic root of 386778116 is about 728.5968643982.

The spelling of 386778116 in words is "three hundred eighty-six million, seven hundred seventy-eight thousand, one hundred sixteen".