386847791780 has 12 divisors (see below), whose sum is σ = 812380362780. Its totient is φ = 154739116704.

The previous prime is 386847791779. The next prime is 386847791833. The reversal of 386847791780 is 87197748683.

It can be written as a sum of positive squares in 2 ways, for example, as 76525263424 + 310322528356 = 276632^2 + 557066^2 .

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 386847791780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9671194775 + ... + 9671194814.

It is an arithmetic number, because the mean of its divisors is an integer number (67698363565).

Almost surely, 2^386847791780 is an apocalyptic number.

It is an amenable number.

386847791780 is an abundant number, since it is smaller than the sum of its proper divisors (425532571000).

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

386847791780 is a wasteful number, since it uses less digits than its factorization.

386847791780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19342389598 (or 19342389596 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 68.

The spelling of 386847791780 in words is "three hundred eighty-six billion, eight hundred forty-seven million, seven hundred ninety-one thousand, seven hundred eighty".