1831906 has 8 divisors (see below), whose sum is σ = 2753964. Its totient is φ = 913920.

The previous prime is 1831877. The next prime is 1831909. The reversal of 1831906 is 6091381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 128881 = 1305^2 + 359^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666 + ... + 2026.

2^1831906 is an apocalyptic number.

1831906 is a deficient number, since it is larger than the sum of its proper divisors (922058).

1831906 is a wasteful number, since it uses less digits than its factorization.

1831906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1831906 is about 1353.4792203798. The cubic root of 1831906 is about 122.3585706399.

The spelling of 1831906 in words is "one million, eight hundred thirty-one thousand, nine hundred six".