1813874 has 8 divisors (see below), whose sum is σ = 2730348. Its totient is φ = 903760.

The previous prime is 1813853. The next prime is 1813897. The reversal of 1813874 is 4783181.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 105625 = 1307^2 + 325^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1813874.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 797 + ... + 2064.

2^1813874 is an apocalyptic number.

1813874 is a deficient number, since it is larger than the sum of its proper divisors (916474).

1813874 is a wasteful number, since it uses less digits than its factorization.

1813874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 5376, while the sum is 32.

The square root of 1813874 is about 1346.8013959007. The cubic root of 1813874 is about 121.9557754246.

The spelling of 1813874 in words is "one million, eight hundred thirteen thousand, eight hundred seventy-four".