381887748 has 36 divisors (see below), whose sum is σ = 1053085488. Its totient is φ = 115723440.

The previous prime is 381887743. The next prime is 381887761. The reversal of 381887748 is 847788183.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 381887694 and 381887703.

It is not an unprimeable number, because it can be changed into a prime (381887743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481786 + ... + 482577.

Almost surely, 2^381887748 is an apocalyptic number.

It is an amenable number.

381887748 is an abundant number, since it is smaller than the sum of its proper divisors (671197740).

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

381887748 is a wasteful number, since it uses less digits than its factorization.

381887748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964384 (or 964379 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 381887748 is about 19541.9484187222. The cubic root of 381887748 is about 725.5130719377.

The spelling of 381887748 in words is "three hundred eighty-one million, eight hundred eighty-seven thousand, seven hundred forty-eight".