1806830 has 16 divisors (see below), whose sum is σ = 3268944. Its totient is φ = 719040.

The previous prime is 1806803. The next prime is 1806839. The reversal of 1806830 is 386081.

It is a self number, because there is not a number n which added to its sum of digits gives 1806830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489 + ... + 3131.

It is an arithmetic number, because the mean of its divisors is an integer number (204309).

2^1806830 is an apocalyptic number.

1806830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1806830 is a deficient number, since it is larger than the sum of its proper divisors (1462114).

1806830 is a wasteful number, since it uses less digits than its factorization.

1806830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1806830 is about 1344.1837671985. The cubic root of 1806830 is about 121.7977029036.

The spelling of 1806830 in words is "one million, eight hundred six thousand, eight hundred thirty".