199135272949 has 2 divisors, whose sum is σ = 199135272950. Its totient is φ = 199135272948.

The previous prime is 199135272929. The next prime is 199135272967. The reversal of 199135272949 is 949272531991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139320788049 + 59814484900 = 373257^2 + 244570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199135272949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199135272929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99567636474 + 99567636475.

It is an arithmetic number, because the mean of its divisors is an integer number (99567636475).

Almost surely, 2^199135272949 is an apocalyptic number.

It is an amenable number.

199135272949 is a deficient number, since it is larger than the sum of its proper divisors (1).

199135272949 is an equidigital number, since it uses as much as digits as its factorization.

199135272949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 61.

The spelling of 199135272949 in words is "one hundred ninety-nine billion, one hundred thirty-five million, two hundred seventy-two thousand, nine hundred forty-nine".