381409802988 has 192 divisors, whose sum is σ = 1001040768000. Its totient is φ = 112471016448.

The previous prime is 381409802987. The next prime is 381409802993. The reversal of 381409802988 is 889208904183.

It is not an unprimeable number, because it can be changed into a prime (381409802987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3703007745 + ... + 3703007847.

It is an arithmetic number, because the mean of its divisors is an integer number (5213754000).

Almost surely, 2^381409802988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381409802988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500520384000).

381409802988 is an abundant number, since it is smaller than the sum of its proper divisors (619630965012).

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

381409802988 is a wasteful number, since it uses less digits than its factorization.

381409802988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 60.

The spelling of 381409802988 in words is "three hundred eighty-one billion, four hundred nine million, eight hundred two thousand, nine hundred eighty-eight".