381111983 has 8 divisors (see below), whose sum is σ = 435965952. Its totient is φ = 326360376.

The previous prime is 381111979. The next prime is 381111989. The reversal of 381111983 is 389111183.

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

It is a cyclic number.

It is not a de Polignac number, because 381111983 - 2² = 381111979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381111989) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17435 + ... + 32652.

It is an arithmetic number, because the mean of its divisors is an integer number (54495744).

Almost surely, 2^381111983 is an apocalyptic number.

381111983 is a deficient number, since it is larger than the sum of its proper divisors (54853969).

381111983 is a wasteful number, since it uses less digits than its factorization.

381111983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51181.

The product of its digits is 5184, while the sum is 35.

The square root of 381111983 is about 19522.0896166368. The cubic root of 381111983 is about 725.0214709456.

The spelling of 381111983 in words is "three hundred eighty-one million, one hundred eleven thousand, nine hundred eighty-three".