1681413 has 4 divisors (see below), whose sum is σ = 2241888. Its totient is φ = 1120940.

The previous prime is 1681411. The next prime is 1681423. The reversal of 1681413 is 3141861.

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.

It is a cyclic number.

It is not a de Polignac number, because 1681413 - 2¹ = 1681411 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681411) 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, 280233 + ... + 280238.

It is an arithmetic number, because the mean of its divisors is an integer number (560472).

2^1681413 is an apocalyptic number.

It is an amenable number.

1681413 is a deficient number, since it is larger than the sum of its proper divisors (560475).

1681413 is an equidigital number, since it uses as much as digits as its factorization.

1681413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560474.

The product of its digits is 576, while the sum is 24.

The square root of 1681413 is about 1296.6931017014. The cubic root of 1681413 is about 118.9117581353.

The spelling of 1681413 in words is "one million, six hundred eighty-one thousand, four hundred thirteen".