1830244621 has 4 divisors (see below), whose sum is σ = 1830379744. Its totient is φ = 1830109500.

The previous prime is 1830244579. The next prime is 1830244639. The reversal of 1830244621 is 1264420381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1830244621 - 2²⁹ = 1293373709 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 (1830244421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44655 + ... + 75196.

It is an arithmetic number, because the mean of its divisors is an integer number (457594936).

Almost surely, 2^1830244621 is an apocalyptic number.

It is an amenable number.

1830244621 is a deficient number, since it is larger than the sum of its proper divisors (135123).

1830244621 is a wasteful number, since it uses less digits than its factorization.

1830244621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135122.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1830244621 is about 42781.3583351441. The cubic root of 1830244621 is about 1223.2156993424.

The spelling of 1830244621 in words is "one billion, eight hundred thirty million, two hundred forty-four thousand, six hundred twenty-one".