381658842 has 24 divisors (see below), whose sum is σ = 832409760. Its totient is φ = 126376200.

The previous prime is 381658831. The next prime is 381658853. The reversal of 381658842 is 248856183.

It is an interprime number because it is at equal distance from previous prime (381658831) and next prime (381658853).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67492 + ... + 72927.

It is an arithmetic number, because the mean of its divisors is an integer number (34683740).

Almost surely, 2^381658842 is an apocalyptic number.

381658842 is an abundant number, since it is smaller than the sum of its proper divisors (450750918).

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

381658842 is a wasteful number, since it uses less digits than its factorization.

381658842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140578 (or 140575 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 381658842 is about 19536.0907553175. The cubic root of 381658842 is about 725.3680838802.

The spelling of 381658842 in words is "three hundred eighty-one million, six hundred fifty-eight thousand, eight hundred forty-two".