1839381 has 16 divisors (see below), whose sum is σ = 2564544. Its totient is φ = 1171584.

The previous prime is 1839377. The next prime is 1839401.

1839381 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1839381 - 2² = 1839377 is a prime.

It is a super-2 number, since 2×1839381² = 6766644926322, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1839361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7990 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (160284).

2^1839381 is an apocalyptic number.

It is an amenable number.

1839381 is a deficient number, since it is larger than the sum of its proper divisors (725163).

1839381 is a wasteful number, since it uses less digits than its factorization.

1839381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 5184, while the sum is 33.

The square root of 1839381 is about 1356.2378110051. The cubic root of 1839381 is about 122.5247707786.

The spelling of 1839381 in words is "one million, eight hundred thirty-nine thousand, three hundred eighty-one".