381405784482 has 32 divisors (see below), whose sum is σ = 847597195200. Its totient is φ = 127130943744.

The previous prime is 381405784471. The next prime is 381405784489. The reversal of 381405784482 is 284487504183.

381405784482 is a `hidden beast` number, since 3 + 8 + 140 + 57 + 8 + 448 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (381405784489) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1753173 + ... + 1958679.

It is an arithmetic number, because the mean of its divisors is an integer number (26487412350).

Almost surely, 2^381405784482 is an apocalyptic number.

381405784482 is an abundant number, since it is smaller than the sum of its proper divisors (466191410718).

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

381405784482 is a wasteful number, since it uses less digits than its factorization.

381405784482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239887 (or 239881 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 54.

The spelling of 381405784482 in words is "three hundred eighty-one billion, four hundred five million, seven hundred eighty-four thousand, four hundred eighty-two".