1830805906 has 16 divisors (see below), whose sum is σ = 2755111320. Its totient is φ = 912441600.

The previous prime is 1830805903. The next prime is 1830805927. The reversal of 1830805906 is 6095080381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1788021225 + 42784681 = 42285^2 + 6541^2 .

It is not an unprimeable number, because it can be changed into a prime (1830805901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228810 + ... + 1230298.

Almost surely, 2^1830805906 is an apocalyptic number.

1830805906 is a deficient number, since it is larger than the sum of its proper divisors (924305414).

1830805906 is a wasteful number, since it uses less digits than its factorization.

1830805906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1830805906 is about 42787.9177572361. The cubic root of 1830805906 is about 1223.3407286133.

The spelling of 1830805906 in words is "one billion, eight hundred thirty million, eight hundred five thousand, nine hundred six".