381341644 has 12 divisors (see below), whose sum is σ = 681547104. Its totient is φ = 186613904.

The previous prime is 381341641. The next prime is 381341659. The reversal of 381341644 is 446143183.

It is not an unprimeable number, because it can be changed into a prime (381341641) 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, 1014019 + ... + 1014394.

It is an arithmetic number, because the mean of its divisors is an integer number (56795592).

Almost surely, 2^381341644 is an apocalyptic number.

It is an amenable number.

381341644 is a deficient number, since it is larger than the sum of its proper divisors (300205460).

381341644 is a wasteful number, since it uses less digits than its factorization.

381341644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028464 (or 2028462 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 381341644 is about 19527.9708111212. The cubic root of 381341644 is about 725.1670761991.

The spelling of 381341644 in words is "three hundred eighty-one million, three hundred forty-one thousand, six hundred forty-four".