993144813 has 8 divisors (see below), whose sum is σ = 1354988448. Its totient is φ = 646698864.

The previous prime is 993144797. The next prime is 993144847. The reversal of 993144813 is 318441399.

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

It is not a de Polignac number, because 993144813 - 2⁴ = 993144797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993144863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3849270 + ... + 3849527.

It is an arithmetic number, because the mean of its divisors is an integer number (169373556).

Almost surely, 2^993144813 is an apocalyptic number.

It is an amenable number.

993144813 is a deficient number, since it is larger than the sum of its proper divisors (361843635).

993144813 is a wasteful number, since it uses less digits than its factorization.

993144813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698843.

The product of its digits is 93312, while the sum is 42.

The square root of 993144813 is about 31514.2001802362. The cubic root of 993144813 is about 997.7096961797.

The spelling of 993144813 in words is "nine hundred ninety-three million, one hundred forty-four thousand, eight hundred thirteen".