1813282 has 4 divisors (see below), whose sum is σ = 2719926. Its totient is φ = 906640.

The previous prime is 1813277. The next prime is 1813291. The reversal of 1813282 is 2823181.

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

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 370881 = 1201^2 + 609^2 .

It is a super-2 number, since 2×1813282² = 6575983223048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453319 + ... + 453322.

2^1813282 is an apocalyptic number.

1813282 is a deficient number, since it is larger than the sum of its proper divisors (906644).

1813282 is an equidigital number, since it uses as much as digits as its factorization.

1813282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906643.

The product of its digits is 768, while the sum is 25.

The square root of 1813282 is about 1346.5815979732. The cubic root of 1813282 is about 121.9425062789.

The spelling of 1813282 in words is "one million, eight hundred thirteen thousand, two hundred eighty-two".