381838364 has 36 divisors (see below), whose sum is σ = 735963984. Its totient is φ = 172991808.

The previous prime is 381838349. The next prime is 381838367. The reversal of 381838364 is 463838183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381838367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27464 + ... + 38960.

It is an arithmetic number, because the mean of its divisors is an integer number (20443444).

Almost surely, 2^381838364 is an apocalyptic number.

It is an amenable number.

381838364 is a deficient number, since it is larger than the sum of its proper divisors (354125620).

381838364 is a wasteful number, since it uses less digits than its factorization.

381838364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11562 (or 11541 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 381838364 is about 19540.6848395853. The cubic root of 381838364 is about 725.4817972309.

The spelling of 381838364 in words is "three hundred eighty-one million, eight hundred thirty-eight thousand, three hundred sixty-four".