2381838 has 16 divisors (see below), whose sum is σ = 4892880. Its totient is φ = 772416.

The previous prime is 2381807. The next prime is 2381839. The reversal of 2381838 is 8381832.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2381799 and 2381808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5143 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (305805).

2^2381838 is an apocalyptic number.

2381838 is an abundant number, since it is smaller than the sum of its proper divisors (2511042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2381838 is a wasteful number, since it uses less digits than its factorization.

2381838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771.

The product of its digits is 9216, while the sum is 33.

The square root of 2381838 is about 1543.3204463105. The cubic root of 2381838 is about 133.5480055721.

The spelling of 2381838 in words is "two million, three hundred eighty-one thousand, eight hundred thirty-eight".