1813343 has 12 divisors (see below), whose sum is σ = 2202480. Its totient is φ = 1485792.

The previous prime is 1813337. The next prime is 1813351. The reversal of 1813343 is 3433181.

It is a happy number.

It is not a de Polignac number, because 1813343 - 2⁴ = 1813327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (183540).

2^1813343 is an apocalyptic number.

1813343 is a deficient number, since it is larger than the sum of its proper divisors (389137).

1813343 is a wasteful number, since it uses less digits than its factorization.

1813343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1639 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1813343 is about 1346.6042477283. The cubic root of 1813343 is about 121.9438736723.

The spelling of 1813343 in words is "one million, eight hundred thirteen thousand, three hundred forty-three".