386331786320 has 20 divisors (see below), whose sum is σ = 898221403380. Its totient is φ = 154532714496.

The previous prime is 386331786317. The next prime is 386331786329. The reversal of 386331786320 is 23687133683.

It can be written as a sum of positive squares in 2 ways, for example, as 72669063184 + 313662723136 = 269572^2 + 560056^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386331786329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2414573585 + ... + 2414573744.

It is an arithmetic number, because the mean of its divisors is an integer number (44911070169).

Almost surely, 2^386331786320 is an apocalyptic number.

It is an amenable number.

386331786320 is an abundant number, since it is smaller than the sum of its proper divisors (511889617060).

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

386331786320 is a wasteful number, since it uses less digits than its factorization.

386331786320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829147342 (or 4829147336 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 386331786320 in words is "three hundred eighty-six billion, three hundred thirty-one million, seven hundred eighty-six thousand, three hundred twenty".