1813007 has 4 divisors (see below), whose sum is σ = 2072016. Its totient is φ = 1554000.

The previous prime is 1813003. The next prime is 1813039. The reversal of 1813007 is 7003181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7003181 = 29 ⋅241489.

It is not a de Polignac number, because 1813007 - 2² = 1813003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1813007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129494 + ... + 129507.

It is an arithmetic number, because the mean of its divisors is an integer number (518004).

2^1813007 is an apocalyptic number.

1813007 is a deficient number, since it is larger than the sum of its proper divisors (259009).

1813007 is an equidigital number, since it uses as much as digits as its factorization.

1813007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259008.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1813007 is about 1346.4794836907. The cubic root of 1813007 is about 121.9363414197.

Adding to 1813007 its reverse (7003181), we get a palindrome (8816188).

The spelling of 1813007 in words is "one million, eight hundred thirteen thousand, seven".