381394534663 has 8 divisors (see below), whose sum is σ = 390323268368. Its totient is φ = 372468487104.

The previous prime is 381394534607. The next prime is 381394534687. The reversal of 381394534663 is 366435493183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381394534663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381394534063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382806 + ... + 953587.

It is an arithmetic number, because the mean of its divisors is an integer number (48790408546).

Almost surely, 2^381394534663 is an apocalyptic number.

381394534663 is a deficient number, since it is larger than the sum of its proper divisors (8928733705).

381394534663 is a wasteful number, since it uses less digits than its factorization.

381394534663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343073.

The product of its digits is 16796160, while the sum is 55.

The spelling of 381394534663 in words is "three hundred eighty-one billion, three hundred ninety-four million, five hundred thirty-four thousand, six hundred sixty-three".