993841343828 has 24 divisors (see below), whose sum is σ = 1803166202880. Its totient is φ = 478790998560.

The previous prime is 993841343827. The next prime is 993841343851. The reversal of 993841343828 is 828343148399.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993841343821) 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 7 ways as a sum of consecutive naturals, for example, 17471276 + ... + 17528067.

It is an arithmetic number, because the mean of its divisors is an integer number (75131925120).

Almost surely, 2^993841343828 is an apocalyptic number.

It is an amenable number.

993841343828 is a deficient number, since it is larger than the sum of its proper divisors (809324859052).

993841343828 is a wasteful number, since it uses less digits than its factorization.

993841343828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999607 (or 34999605 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 62.

The spelling of 993841343828 in words is "nine hundred ninety-three billion, eight hundred forty-one million, three hundred forty-three thousand, eight hundred twenty-eight".