1830345 has 16 divisors (see below), whose sum is σ = 3195072. Its totient is φ = 887360.

The previous prime is 1830343. The next prime is 1830347. The reversal of 1830345 is 5430381.

1830345 = T₂₃₀ + T₂₃₁ + ... + T₂₈₄.

It is an interprime number because it is at equal distance from previous prime (1830343) and next prime (1830347).

It is not a de Polignac number, because 1830345 - 2¹ = 1830343 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

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

It is not an unprimeable number, because it can be changed into a prime (1830341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5382 + ... + 5711.

It is an arithmetic number, because the mean of its divisors is an integer number (199692).

2^1830345 is an apocalyptic number.

1830345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1830345 is a deficient number, since it is larger than the sum of its proper divisors (1364727).

1830345 is a wasteful number, since it uses less digits than its factorization.

1830345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1830345 is about 1352.9024355067. The cubic root of 1830345 is about 122.3238061185.

The spelling of 1830345 in words is "one million, eight hundred thirty thousand, three hundred forty-five".