1993711673 has 2 divisors, whose sum is σ = 1993711674. Its totient is φ = 1993711672.

The previous prime is 1993711639. The next prime is 1993711679. The reversal of 1993711673 is 3761173991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334660089 + 659051584 = 36533^2 + 25672^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993711673 - 2⁶ = 1993711609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1993711679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996855836 + 996855837.

It is an arithmetic number, because the mean of its divisors is an integer number (996855837).

Almost surely, 2^1993711673 is an apocalyptic number.

It is an amenable number.

1993711673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993711673 is an equidigital number, since it uses as much as digits as its factorization.

1993711673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 47.

The square root of 1993711673 is about 44650.9985666614. The cubic root of 1993711673 is about 1258.5991976262.

The spelling of 1993711673 in words is "one billion, nine hundred ninety-three million, seven hundred eleven thousand, six hundred seventy-three".