380006641818 has 24 divisors (see below), whose sum is σ = 823372044768. Its totient is φ = 126665138952.

The previous prime is 380006641789. The next prime is 380006641877. The reversal of 380006641818 is 818146600083.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352771 + ... + 940457.

It is an arithmetic number, because the mean of its divisors is an integer number (34307168532).

Almost surely, 2^380006641818 is an apocalyptic number.

380006641818 is an abundant number, since it is smaller than the sum of its proper divisors (443365402950).

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

380006641818 is a wasteful number, since it uses less digits than its factorization.

380006641818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623618 (or 623615 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 380006641818 in words is "three hundred eighty billion, six million, six hundred forty-one thousand, eight hundred eighteen".