2381895 has 24 divisors (see below), whose sum is σ = 4232592. Its totient is φ = 1238400.

The previous prime is 2381893. The next prime is 2381909. The reversal of 2381895 is 5981832.

It is not a de Polignac number, because 2381895 - 2¹ = 2381893 is a prime.

2381895 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381891) 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, 1200 + ... + 2490.

It is an arithmetic number, because the mean of its divisors is an integer number (176358).

2^2381895 is an apocalyptic number.

2381895 is a deficient number, since it is larger than the sum of its proper divisors (1850697).

2381895 is a wasteful number, since it uses less digits than its factorization.

2381895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1340 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2381895 is about 1543.3389128769. The cubic root of 2381895 is about 133.5490708805.

It can be divided in two parts, 23 and 81895, that added together give a palindrome (81918).

The spelling of 2381895 in words is "two million, three hundred eighty-one thousand, eight hundred ninety-five".