10993813 has 4 divisors (see below), whose sum is σ = 11372940. Its totient is φ = 10614688.

The previous prime is 10993811. The next prime is 10993819. The reversal of 10993813 is 31839901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8427409 + 2566404 = 2903^2 + 1602^2 .

It is a cyclic number.

It is not a de Polignac number, because 10993813 - 2¹ = 10993811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10993811) 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, 189520 + ... + 189577.

It is an arithmetic number, because the mean of its divisors is an integer number (2843235).

Almost surely, 2^10993813 is an apocalyptic number.

It is an amenable number.

10993813 is a deficient number, since it is larger than the sum of its proper divisors (379127).

10993813 is an equidigital number, since it uses as much as digits as its factorization.

10993813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379126.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 10993813 is about 3315.6919338201. The cubic root of 10993813 is about 222.3563049800.

The spelling of 10993813 in words is "ten million, nine hundred ninety-three thousand, eight hundred thirteen".