381241992 has 96 divisors (see below), whose sum is σ = 1020470400. Its totient is φ = 118654848.

The previous prime is 381241981. The next prime is 381242021. The reversal of 381241992 is 299142183.

It is a self number, because there is not a number n which added to its sum of digits gives 381241992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 684178 + ... + 684734.

It is an arithmetic number, because the mean of its divisors is an integer number (10629900).

Almost surely, 2^381241992 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 381241992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510235200).

381241992 is an abundant number, since it is smaller than the sum of its proper divisors (639228408).

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

381241992 is a wasteful number, since it uses less digits than its factorization.

381241992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 660 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 381241992 is about 19525.4191248229. The cubic root of 381241992 is about 725.1039039350.

The spelling of 381241992 in words is "three hundred eighty-one million, two hundred forty-one thousand, nine hundred ninety-two".