1813195 has 8 divisors (see below), whose sum is σ = 2192544. Its totient is φ = 1439424.

The previous prime is 1813177. The next prime is 1813211. The reversal of 1813195 is 5913181.

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

It is a cyclic number.

It is not a de Polignac number, because 1813195 - 2⁹ = 1812683 is a prime.

It is a super-2 number, since 2×1813195² = 6575352216050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 639 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (274068).

2^1813195 is an apocalyptic number.

1813195 is a deficient number, since it is larger than the sum of its proper divisors (379349).

1813195 is a wasteful number, since it uses less digits than its factorization.

1813195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789.

The product of its digits is 1080, while the sum is 28.

The square root of 1813195 is about 1346.5492935649. The cubic root of 1813195 is about 121.9405560091.

The spelling of 1813195 in words is "one million, eight hundred thirteen thousand, one hundred ninety-five".