1999713674237 has 2 divisors, whose sum is σ = 1999713674238. Its totient is φ = 1999713674236.

The previous prime is 1999713674213. The next prime is 1999713674251. The reversal of 1999713674237 is 7324763179991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1904990685796 + 94722988441 = 1380214^2 + 307771^2 .

It is an emirp because it is prime and its reverse (7324763179991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1999713674237 - 2¹⁰ = 1999713673213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1999713674207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999856837118 + 999856837119.

It is an arithmetic number, because the mean of its divisors is an integer number (999856837119).

Almost surely, 2^{1999713674237} is an apocalyptic number.

It is an amenable number.

1999713674237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999713674237 is an equidigital number, since it uses as much as digits as its factorization.

1999713674237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 68.

The spelling of 1999713674237 in words is "one trillion, nine hundred ninety-nine billion, seven hundred thirteen million, six hundred seventy-four thousand, two hundred thirty-seven".