381342558 has 16 divisors (see below), whose sum is σ = 781287696. Its totient is φ = 124013760.

The previous prime is 381342557. The next prime is 381342581. The reversal of 381342558 is 855243183.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381342551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774841 + ... + 775332.

It is an arithmetic number, because the mean of its divisors is an integer number (48830481).

Almost surely, 2^381342558 is an apocalyptic number.

381342558 is an abundant number, since it is smaller than the sum of its proper divisors (399945138).

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

381342558 is a wasteful number, since it uses less digits than its factorization.

381342558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550219.

The product of its digits is 115200, while the sum is 39.

The square root of 381342558 is about 19527.9942134363. The cubic root of 381342558 is about 725.1676555590.

The spelling of 381342558 in words is "three hundred eighty-one million, three hundred forty-two thousand, five hundred fifty-eight".