1386813 has 4 divisors (see below), whose sum is σ = 1849088. Its totient is φ = 924540.

The previous prime is 1386811. The next prime is 1386821. The reversal of 1386813 is 3186831.

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 not a de Polignac number, because 1386813 - 2¹ = 1386811 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231133 + ... + 231138.

It is an arithmetic number, because the mean of its divisors is an integer number (462272).

2^1386813 is an apocalyptic number.

It is an amenable number.

1386813 is a deficient number, since it is larger than the sum of its proper divisors (462275).

1386813 is an equidigital number, since it uses as much as digits as its factorization.

1386813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462274.

The product of its digits is 3456, while the sum is 30.

The square root of 1386813 is about 1177.6302475735. The cubic root of 1386813 is about 111.5165438930.

The spelling of 1386813 in words is "one million, three hundred eighty-six thousand, eight hundred thirteen".