1996813 has 8 divisors (see below), whose sum is σ = 2457728. Its totient is φ = 1579824.

The previous prime is 1996793. The next prime is 1996817. The reversal of 1996813 is 3186991.

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

It is a cyclic number.

It is not a de Polignac number, because 1996813 - 2⁵ = 1996781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996817) 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 7 ways as a sum of consecutive naturals, for example, 10881 + ... + 11062.

It is an arithmetic number, because the mean of its divisors is an integer number (307216).

2^1996813 is an apocalyptic number.

1996813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1996813 is a deficient number, since it is larger than the sum of its proper divisors (460915).

1996813 is a wasteful number, since it uses less digits than its factorization.

1996813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21963.

The product of its digits is 11664, while the sum is 37.

The square root of 1996813 is about 1413.0863384804. The cubic root of 1996813 is about 125.9251466044.

It can be divided in two parts, 1996 and 813, that added together give a square (2809 = 53²).

The spelling of 1996813 in words is "one million, nine hundred ninety-six thousand, eight hundred thirteen".