1993317631727 has 4 divisors (see below), whose sum is σ = 2035728645216. Its totient is φ = 1950906618240.

The previous prime is 1993317631709. The next prime is 1993317631751. The reversal of 1993317631727 is 7271367133991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1993317631727 - 2¹⁴ = 1993317615343 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 (1993317631427) 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, 21205506674 + ... + 21205506767.

It is an arithmetic number, because the mean of its divisors is an integer number (508932161304).

Almost surely, 2^{1993317631727} is an apocalyptic number.

1993317631727 is a deficient number, since it is larger than the sum of its proper divisors (42411013489).

1993317631727 is an equidigital number, since it uses as much as digits as its factorization.

1993317631727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42411013488.

The product of its digits is 9001692, while the sum is 59.

The spelling of 1993317631727 in words is "one trillion, nine hundred ninety-three billion, three hundred seventeen million, six hundred thirty-one thousand, seven hundred twenty-seven".