1812013 has 8 divisors (see below), whose sum is σ = 2192832. Its totient is φ = 1461696.

The previous prime is 1811993. The next prime is 1812037. The reversal of 1812013 is 3102181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812013 is a prime.

It is a super-2 number, since 2×1812013² = 6566782224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 7732.

It is an arithmetic number, because the mean of its divisors is an integer number (274104).

2^1812013 is an apocalyptic number.

It is an amenable number.

1812013 is a deficient number, since it is larger than the sum of its proper divisors (380819).

1812013 is a wasteful number, since it uses less digits than its factorization.

1812013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15251.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1812013 is about 1346.1103223733. The cubic root of 1812013 is about 121.9140530556.

Adding to 1812013 its reverse (3102181), we get a palindrome (4914194).

The spelling of 1812013 in words is "one million, eight hundred twelve thousand, thirteen".