381848111 has 24 divisors (see below), whose sum is σ = 420624000. Its totient is φ = 346213440.

The previous prime is 381848081. The next prime is 381848123. The reversal of 381848111 is 111848183.

It is a de Polignac number, because none of the positive numbers 2^k-381848111 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 (381848141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1667345 + ... + 1667573.

It is an arithmetic number, because the mean of its divisors is an integer number (17526000).

Almost surely, 2^381848111 is an apocalyptic number.

381848111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

381848111 is a deficient number, since it is larger than the sum of its proper divisors (38775889).

381848111 is a wasteful number, since it uses less digits than its factorization.

381848111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 428 counting only the distinct ones).

The product of its digits is 6144, while the sum is 35.

The square root of 381848111 is about 19540.9342407163. The cubic root of 381848111 is about 725.4879701840.

The spelling of 381848111 in words is "three hundred eighty-one million, eight hundred forty-eight thousand, one hundred eleven".