1813694 has 4 divisors (see below), whose sum is σ = 2720544. Its totient is φ = 906846.

The previous prime is 1813681. The next prime is 1813699. The reversal of 1813694 is 4963181.

It is a happy number.

1813694 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1813694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453422 + ... + 453425.

It is an arithmetic number, because the mean of its divisors is an integer number (680136).

2^1813694 is an apocalyptic number.

1813694 is a deficient number, since it is larger than the sum of its proper divisors (906850).

1813694 is an equidigital number, since it uses as much as digits as its factorization.

1813694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906849.

The product of its digits is 5184, while the sum is 32.

The square root of 1813694 is about 1346.7345692452. The cubic root of 1813694 is about 121.9517411926.

The spelling of 1813694 in words is "one million, eight hundred thirteen thousand, six hundred ninety-four".