1830855 has 32 divisors (see below), whose sum is σ = 3245760. Its totient is φ = 875520.

The previous prime is 1830839. The next prime is 1830863. The reversal of 1830855 is 5580381.

It is a happy number.

It is not a de Polignac number, because 1830855 - 2⁴ = 1830839 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a nontrivial repunit in base 122.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7881 + ... + 8109.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2^1830855 is an apocalyptic number.

1830855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1830855 is a deficient number, since it is larger than the sum of its proper divisors (1414905).

1830855 is a wasteful number, since it uses less digits than its factorization.

1830855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1830855 is about 1353.0909060370. The cubic root of 1830855 is about 122.3351663352.

The spelling of 1830855 in words is "one million, eight hundred thirty thousand, eight hundred fifty-five".