993434321983 has 8 divisors (see below), whose sum is σ = 1012952865168. Its totient is φ = 973944464064.

The previous prime is 993434321911. The next prime is 993434322103. The reversal of 993434321983 is 389123434399.

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 993434321983 - 2¹³ = 993434313791 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 (993434121983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7101366 + ... + 7239907.

It is an arithmetic number, because the mean of its divisors is an integer number (126619108146).

Almost surely, 2^993434321983 is an apocalyptic number.

993434321983 is a deficient number, since it is larger than the sum of its proper divisors (19518543185).

993434321983 is a wasteful number, since it uses less digits than its factorization.

993434321983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342633.

The product of its digits is 15116544, while the sum is 58.

The spelling of 993434321983 in words is "nine hundred ninety-three billion, four hundred thirty-four million, three hundred twenty-one thousand, nine hundred eighty-three".