381859660 has 48 divisors (see below), whose sum is σ = 986965056. Its totient is φ = 120851712.

The previous prime is 381859637. The next prime is 381859697. The reversal of 381859660 is 66958183.

It is a self number, because there is not a number n which added to its sum of digits gives 381859660.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103087 + ... + 106726.

It is an arithmetic number, because the mean of its divisors is an integer number (20561772).

Almost surely, 2^381859660 is an apocalyptic number.

It is an amenable number.

381859660 is an abundant number, since it is smaller than the sum of its proper divisors (605105396).

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

381859660 is a wasteful number, since it uses less digits than its factorization.

381859660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209842 (or 209840 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 381859660 is about 19541.2297463594. The cubic root of 381859660 is about 725.4952842406.

The spelling of 381859660 in words is "three hundred eighty-one million, eight hundred fifty-nine thousand, six hundred sixty".