381838944 has 24 divisors (see below), whose sum is σ = 1002327480. Its totient is φ = 127279616.

The previous prime is 381838943. The next prime is 381838949. The reversal of 381838944 is 449838183.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 381838893 and 381838902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381838943) 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, 1988649 + ... + 1988840.

It is an arithmetic number, because the mean of its divisors is an integer number (41763645).

Almost surely, 2^381838944 is an apocalyptic number.

It is an amenable number.

381838944 is an abundant number, since it is smaller than the sum of its proper divisors (620488536).

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

381838944 is a wasteful number, since it uses less digits than its factorization.

381838944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977502 (or 3977494 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 381838944 is about 19540.6996804106. The cubic root of 381838944 is about 725.4821645585.

The spelling of 381838944 in words is "three hundred eighty-one million, eight hundred thirty-eight thousand, nine hundred forty-four".