1812713 has 4 divisors (see below), whose sum is σ = 2071680. Its totient is φ = 1553748.

The previous prime is 1812689. The next prime is 1812721. The reversal of 1812713 is 3172181.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3172181 = 337 ⋅9413.

It is not a de Polignac number, because 1812713 - 2⁸ = 1812457 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1812763) 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, 129473 + ... + 129486.

It is an arithmetic number, because the mean of its divisors is an integer number (517920).

2^1812713 is an apocalyptic number.

It is an amenable number.

1812713 is a deficient number, since it is larger than the sum of its proper divisors (258967).

1812713 is an equidigital number, since it uses as much as digits as its factorization.

1812713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258966.

The product of its digits is 336, while the sum is 23.

The square root of 1812713 is about 1346.3703056737. The cubic root of 1812713 is about 121.9297499353.

Adding to 1812713 its reverse (3172181), we get a palindrome (4984894).

The spelling of 1812713 in words is "one million, eight hundred twelve thousand, seven hundred thirteen".