381450218834 has 8 divisors (see below), whose sum is σ = 586130824188. Its totient is φ = 186073277440.

The previous prime is 381450218791. The next prime is 381450218861. The reversal of 381450218834 is 438812054183.

It can be written as a sum of positive squares in 2 ways, for example, as 370755556609 + 10694662225 = 608897^2 + 103415^2 .

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2325915887 + ... + 2325916050.

Almost surely, 2^381450218834 is an apocalyptic number.

381450218834 is a deficient number, since it is larger than the sum of its proper divisors (204680605354).

381450218834 is a wasteful number, since it uses less digits than its factorization.

381450218834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651831980.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 381450218834 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, eight hundred thirty-four".