993243854291 has 16 divisors (see below), whose sum is σ = 1106636213760. Its totient is φ = 885141613440.

The previous prime is 993243854279. The next prime is 993243854297. The reversal of 993243854291 is 192458342399.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 993243854291 - 2⁶ = 993243854227 is a prime.

It is a super-2 number, since 2×993243854291² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993243854291.

It is not an unprimeable number, because it can be changed into a prime (993243854297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4054781 + ... + 4292753.

It is an arithmetic number, because the mean of its divisors is an integer number (69164763360).

Almost surely, 2^993243854291 is an apocalyptic number.

993243854291 is a deficient number, since it is larger than the sum of its proper divisors (113392359469).

993243854291 is a wasteful number, since it uses less digits than its factorization.

993243854291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249086.

The product of its digits is 16796160, while the sum is 59.

The spelling of 993243854291 in words is "nine hundred ninety-three billion, two hundred forty-three million, eight hundred fifty-four thousand, two hundred ninety-one".