386649441864 has 384 divisors, whose sum is σ = 1263094560000. Its totient is φ = 106744974336.

The previous prime is 386649441851. The next prime is 386649441883. The reversal of 386649441864 is 468144946683.

It is a happy number.

386649441864 is a `hidden beast` number, since 3 + 8 + 66 + 494 + 4 + 1 + 86 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 87693292 + ... + 87697700.

It is an arithmetic number, because the mean of its divisors is an integer number (3289308750).

Almost surely, 2^386649441864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386649441864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631547280000).

386649441864 is an abundant number, since it is smaller than the sum of its proper divisors (876445118136).

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

386649441864 is a wasteful number, since it uses less digits than its factorization.

386649441864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562 (or 4541 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 63.

The spelling of 386649441864 in words is "three hundred eighty-six billion, six hundred forty-nine million, four hundred forty-one thousand, eight hundred sixty-four".