381343813434 has 40 divisors (see below), whose sum is σ = 854585715060. Its totient is φ = 127100755584.

The previous prime is 381343813393. The next prime is 381343813457. The reversal of 381343813434 is 434318343183.

381343813434 is a `hidden beast` number, since 3 + 8 + 134 + 3 + 81 + 3 + 434 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 360522189225 + 20821624209 = 600435^2 + 144297^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 381343813434.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1420882 + ... + 1667810.

Almost surely, 2^381343813434 is an apocalyptic number.

381343813434 is an abundant number, since it is smaller than the sum of its proper divisors (473241901626).

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

381343813434 is a wasteful number, since it uses less digits than its factorization.

381343813434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256476 (or 256467 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The spelling of 381343813434 in words is "three hundred eighty-one billion, three hundred forty-three million, eight hundred thirteen thousand, four hundred thirty-four".