381118115 has 8 divisors (see below), whose sum is σ = 522676320. Its totient is φ = 261338112.

The previous prime is 381118109. The next prime is 381118139. The reversal of 381118115 is 511811183.

It is a happy number.

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

It is not a de Polignac number, because 381118115 - 2⁴ = 381118099 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 5444510 + ... + 5444579.

It is an arithmetic number, because the mean of its divisors is an integer number (65334540).

Almost surely, 2^381118115 is an apocalyptic number.

381118115 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381118115 is a deficient number, since it is larger than the sum of its proper divisors (141558205).

381118115 is a wasteful number, since it uses less digits than its factorization.

381118115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889101.

The product of its digits is 960, while the sum is 29.

The square root of 381118115 is about 19522.2466688647. The cubic root of 381118115 is about 725.0253593983.

Adding to 381118115 its reverse (511811183), we get a palindrome (892929298).

The spelling of 381118115 in words is "three hundred eighty-one million, one hundred eighteen thousand, one hundred fifteen".