1993289361922 has 4 divisors (see below), whose sum is σ = 2989934042886. Its totient is φ = 996644680960.

The previous prime is 1993289361907. The next prime is 1993289361929. The reversal of 1993289361922 is 2291639823991.

It is a Cunningham number, because it is equal to 1411839²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 1993289361921 + 1 = 1411839^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (1993289361929) 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 as a sum of consecutive naturals, namely, 498322340479 + ... + 498322340482.

Almost surely, 2^{1993289361922} is an apocalyptic number.

1993289361922 is a deficient number, since it is larger than the sum of its proper divisors (996644680964).

1993289361922 is an equidigital number, since it uses as much as digits as its factorization.

1993289361922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996644680963.

The product of its digits is 22674816, while the sum is 64.

The spelling of 1993289361922 in words is "one trillion, nine hundred ninety-three billion, two hundred eighty-nine million, three hundred sixty-one thousand, nine hundred twenty-two".