1813315 has 16 divisors (see below), whose sum is σ = 2515968. Its totient is φ = 1228896.

The previous prime is 1813313. The next prime is 1813319. The reversal of 1813315 is 5133181.

It is a cyclic number.

It is not a de Polignac number, because 1813315 - 2¹ = 1813313 is a prime.

It is a super-2 number, since 2×1813315² = 6576222578450, which contains 22 as substring.

1813315 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1813313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3354 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^1813315 is an apocalyptic number.

1813315 is a deficient number, since it is larger than the sum of its proper divisors (702653).

1813315 is a wasteful number, since it uses less digits than its factorization.

1813315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its digits is 360, while the sum is 22.

The square root of 1813315 is about 1346.5938511667. The cubic root of 1813315 is about 121.9432460201.

Adding to 1813315 its reverse (5133181), we get a palindrome (6946496).

The spelling of 1813315 in words is "one million, eight hundred thirteen thousand, three hundred fifteen".