381189338 has 8 divisors (see below), whose sum is σ = 571887840. Its totient is φ = 190560060.

The previous prime is 381189337. The next prime is 381189349. The reversal of 381189338 is 833981183.

It is a happy number.

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

It is a super-2 number, since 2×381189338² = 290610622809756488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381189337) 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 3 ways as a sum of consecutive naturals, for example, 128 + ... + 27611.

It is an arithmetic number, because the mean of its divisors is an integer number (71485980).

Almost surely, 2^381189338 is an apocalyptic number.

381189338 is a deficient number, since it is larger than the sum of its proper divisors (190698502).

381189338 is a wasteful number, since it uses less digits than its factorization.

381189338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34612.

The product of its digits is 124416, while the sum is 44.

The square root of 381189338 is about 19524.0707333281. The cubic root of 381189338 is about 725.0705206076.

The spelling of 381189338 in words is "three hundred eighty-one million, one hundred eighty-nine thousand, three hundred thirty-eight".