386404818 has 8 divisors (see below), whose sum is σ = 772809648. Its totient is φ = 128801604.

The previous prime is 386404817. The next prime is 386404831. The reversal of 386404818 is 818404683.

It is a sphenic number, since it is the product of 3 distinct primes.

386404818 is an admirable number.

It is a super-2 number, since 2×386404818² = 298617366747226248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 386404818.

It is not an unprimeable number, because it can be changed into a prime (386404817) by changing a digit.

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, 32200396 + ... + 32200407.

It is an arithmetic number, because the mean of its divisors is an integer number (96601206).

Almost surely, 2^386404818 is an apocalyptic number.

386404818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

386404818 is a wasteful number, since it uses less digits than its factorization.

386404818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64400808.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 386404818 is about 19657.1823514969. The cubic root of 386404818 is about 728.3623877569.

The spelling of 386404818 in words is "three hundred eighty-six million, four hundred four thousand, eight hundred eighteen".