381881748 has 48 divisors (see below), whose sum is σ = 923348160. Its totient is φ = 122763264.

The previous prime is 381881743. The next prime is 381881783. The reversal of 381881748 is 847188183.

It is a junction number, because it is equal to n+sod(n) for n = 381881697 and 381881706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381881743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32436 + ... + 42612.

It is an arithmetic number, because the mean of its divisors is an integer number (19236420).

Almost surely, 2^381881748 is an apocalyptic number.

It is an amenable number.

381881748 is an abundant number, since it is smaller than the sum of its proper divisors (541466412).

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

381881748 is a wasteful number, since it uses less digits than its factorization.

381881748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296 (or 10294 counting only the distinct ones).

The product of its digits is 344064, while the sum is 48.

The square root of 381881748 is about 19541.7949022090. The cubic root of 381881748 is about 725.5092723035.

The spelling of 381881748 in words is "three hundred eighty-one million, eight hundred eighty-one thousand, seven hundred forty-eight".