1823345 has 4 divisors (see below), whose sum is σ = 2188020. Its totient is φ = 1458672.

The previous prime is 1823303. The next prime is 1823357. The reversal of 1823345 is 5433281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5433281 = 7 ⋅776183.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 1062961 = 872^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1823345 - 2⁶ = 1823281 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182330 + ... + 182339.

It is an arithmetic number, because the mean of its divisors is an integer number (547005).

2^1823345 is an apocalyptic number.

It is an amenable number.

1823345 is a deficient number, since it is larger than the sum of its proper divisors (364675).

1823345 is an equidigital number, since it uses as much as digits as its factorization.

1823345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364674.

The product of its digits is 2880, while the sum is 26.

The square root of 1823345 is about 1350.3129266951. The cubic root of 1823345 is about 122.1676678784.

The spelling of 1823345 in words is "one million, eight hundred twenty-three thousand, three hundred forty-five".