1830361 has 4 divisors (see below), whose sum is σ = 1971172. Its totient is φ = 1689552.

The previous prime is 1830349. The next prime is 1830379. The reversal of 1830361 is 1630381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 1394761 = 660^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830361 - 2¹³ = 1822169 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1830331) 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, 70386 + ... + 70411.

It is an arithmetic number, because the mean of its divisors is an integer number (492793).

2^1830361 is an apocalyptic number.

It is an amenable number.

1830361 is a deficient number, since it is larger than the sum of its proper divisors (140811).

1830361 is a wasteful number, since it uses less digits than its factorization.

1830361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140810.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1830361 is about 1352.9083487066. The cubic root of 1830361 is about 122.3241625495.

The spelling of 1830361 in words is "one million, eight hundred thirty thousand, three hundred sixty-one".