1993453271041 has 4 divisors (see below), whose sum is σ = 1993458529584. Its totient is φ = 1993448012500.

The previous prime is 1993453271003. The next prime is 1993453271063. The reversal of 1993453271041 is 1401723543991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1993453271041 - 2²⁹ = 1992916400129 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993453271141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012395 + ... + 2834896.

It is an arithmetic number, because the mean of its divisors is an integer number (498364632396).

Almost surely, 2^{1993453271041} is an apocalyptic number.

It is an amenable number.

1993453271041 is a deficient number, since it is larger than the sum of its proper divisors (5258543).

1993453271041 is an equidigital number, since it uses as much as digits as its factorization.

1993453271041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258542.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 1993453271041 in words is "one trillion, nine hundred ninety-three billion, four hundred fifty-three million, two hundred seventy-one thousand, forty-one".