199701381941 has 2 divisors, whose sum is σ = 199701381942. Its totient is φ = 199701381940.

The previous prime is 199701381907. The next prime is 199701381961. The reversal of 199701381941 is 149183107991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174664649041 + 25036732900 = 417929^2 + 158230^2 .

It is a cyclic number.

It is not a de Polignac number, because 199701381941 - 2¹⁰ = 199701380917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199701381961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99850690970 + 99850690971.

It is an arithmetic number, because the mean of its divisors is an integer number (99850690971).

Almost surely, 2^199701381941 is an apocalyptic number.

It is an amenable number.

199701381941 is a deficient number, since it is larger than the sum of its proper divisors (1).

199701381941 is an equidigital number, since it uses as much as digits as its factorization.

199701381941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 53.

The spelling of 199701381941 in words is "one hundred ninety-nine billion, seven hundred one million, three hundred eighty-one thousand, nine hundred forty-one".