1813345 has 8 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 1403760.

The previous prime is 1813337. The next prime is 1813351. The reversal of 1813345 is 5433181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1813345 - 2³ = 1813337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 6004.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

2^1813345 is an apocalyptic number.

It is an amenable number.

1813345 is a deficient number, since it is larger than the sum of its proper divisors (433055).

1813345 is a wasteful number, since it uses less digits than its factorization.

1813345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735.

The product of its digits is 1440, while the sum is 25.

The square root of 1813345 is about 1346.6049903368. The cubic root of 1813345 is about 121.9439185044.

The spelling of 1813345 in words is "one million, eight hundred thirteen thousand, three hundred forty-five".