1993485929293 has 4 divisors (see below), whose sum is σ = 2047363927420. Its totient is φ = 1939607931168.

The previous prime is 1993485929249. The next prime is 1993485929359. The reversal of 1993485929293 is 3929295843991.

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 1148332989609 + 845152939684 = 1071603^2 + 919322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993485929293 - 2²⁵ = 1993452374861 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 (1993485929243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26938999008 + ... + 26938999081.

It is an arithmetic number, because the mean of its divisors is an integer number (511840981855).

Almost surely, 2^{1993485929293} is an apocalyptic number.

It is an amenable number.

1993485929293 is a deficient number, since it is larger than the sum of its proper divisors (53877998127).

1993485929293 is an equidigital number, since it uses as much as digits as its factorization.

1993485929293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53877998126.

The product of its digits is 340122240, while the sum is 73.

The spelling of 1993485929293 in words is "one trillion, nine hundred ninety-three billion, four hundred eighty-five million, nine hundred twenty-nine thousand, two hundred ninety-three".