382454221840 has 20 divisors (see below), whose sum is σ = 889206065964. Its totient is φ = 152981688704.

The previous prime is 382454221819. The next prime is 382454221841. The reversal of 382454221840 is 48122454283.

It can be written as a sum of positive squares in 2 ways, for example, as 132726147856 + 249728073984 = 364316^2 + 499728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (382454221841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390338807 + ... + 2390338966.

Almost surely, 2^382454221840 is an apocalyptic number.

It is an amenable number.

382454221840 is an abundant number, since it is smaller than the sum of its proper divisors (506751844124).

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

382454221840 is a wasteful number, since it uses less digits than its factorization.

382454221840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4780677786 (or 4780677780 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 43.

The spelling of 382454221840 in words is "three hundred eighty-two billion, four hundred fifty-four million, two hundred twenty-one thousand, eight hundred forty".