1993374217 has 2 divisors, whose sum is σ = 1993374218. Its totient is φ = 1993374216.

The previous prime is 1993374211. The next prime is 1993374241. The reversal of 1993374217 is 7124733991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149820281 + 843553936 = 33909^2 + 29044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993374217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1993374211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996687108 + 996687109.

It is an arithmetic number, because the mean of its divisors is an integer number (996687109).

Almost surely, 2^1993374217 is an apocalyptic number.

It is an amenable number.

1993374217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993374217 is an equidigital number, since it uses as much as digits as its factorization.

1993374217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 46.

The square root of 1993374217 is about 44647.2195886821. The cubic root of 1993374217 is about 1258.5281833764.

The spelling of 1993374217 in words is "one billion, nine hundred ninety-three million, three hundred seventy-four thousand, two hundred seventeen".