1813734 has 48 divisors (see below), whose sum is σ = 4429152. Its totient is φ = 532224.

The previous prime is 1813729. The next prime is 1813739. The reversal of 1813734 is 4373181.

It is an interprime number because it is at equal distance from previous prime (1813729) and next prime (1813739).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1813698 and 1813707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5214 + ... + 5550.

It is an arithmetic number, because the mean of its divisors is an integer number (92274).

2^1813734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214576).

1813734 is an abundant number, since it is smaller than the sum of its proper divisors (2615418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813734 is a wasteful number, since it uses less digits than its factorization.

1813734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1813734 is about 1346.7494198996. The cubic root of 1813734 is about 121.9526377116.

The spelling of 1813734 in words is "one million, eight hundred thirteen thousand, seven hundred thirty-four".