1830556213 has 2 divisors, whose sum is σ = 1830556214. Its totient is φ = 1830556212.

The previous prime is 1830556207. The next prime is 1830556237. The reversal of 1830556213 is 3126550381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1821753124 + 8803089 = 42682^2 + 2967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830556213 - 2⁵ = 1830556181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1830556253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915278106 + 915278107.

It is an arithmetic number, because the mean of its divisors is an integer number (915278107).

Almost surely, 2^1830556213 is an apocalyptic number.

It is an amenable number.

1830556213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830556213 is an equidigital number, since it uses as much as digits as its factorization.

1830556213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1830556213 is about 42784.9998597639. Note that the first 3 decimals coincide. The cubic root of 1830556213 is about 1223.2851113024.

The spelling of 1830556213 in words is "one billion, eight hundred thirty million, five hundred fifty-six thousand, two hundred thirteen".