1830212117 has 2 divisors, whose sum is σ = 1830212118. Its totient is φ = 1830212116.

The previous prime is 1830212093. The next prime is 1830212173. The reversal of 1830212117 is 7112120381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1720507441 + 109704676 = 41479^2 + 10474^2 .

It is an emirp because it is prime and its reverse (7112120381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1830212117 - 2¹⁸ = 1829949973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1830212717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915106058 + 915106059.

It is an arithmetic number, because the mean of its divisors is an integer number (915106059).

Almost surely, 2^1830212117 is an apocalyptic number.

It is an amenable number.

1830212117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830212117 is an equidigital number, since it uses as much as digits as its factorization.

1830212117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 1830212117 is about 42780.9784483712. The cubic root of 1830212117 is about 1223.2084581176.

Adding to 1830212117 its reverse (7112120381), we get a palindrome (8942332498).

The spelling of 1830212117 in words is "one billion, eight hundred thirty million, two hundred twelve thousand, one hundred seventeen".