1830216349 has 4 divisors (see below), whose sum is σ = 1971002236. Its totient is φ = 1689430464.

The previous prime is 1830216341. The next prime is 1830216371. The reversal of 1830216349 is 9436120381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9436120381 = 19259 ⋅489959.

It can be written as a sum of positive squares in 2 ways, for example, as 641001124 + 1189215225 = 25318^2 + 34485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830216349 - 2³ = 1830216341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830216341) 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 3 ways as a sum of consecutive naturals, for example, 70392924 + ... + 70392949.

It is an arithmetic number, because the mean of its divisors is an integer number (492750559).

Almost surely, 2^1830216349 is an apocalyptic number.

It is an amenable number.

1830216349 is a deficient number, since it is larger than the sum of its proper divisors (140785887).

1830216349 is a wasteful number, since it uses less digits than its factorization.

1830216349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140785886.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1830216349 is about 42781.0279095769. The cubic root of 1830216349 is about 1223.2094009253.

The spelling of 1830216349 in words is "one billion, eight hundred thirty million, two hundred sixteen thousand, three hundred forty-nine".