191648053049 has 2 divisors, whose sum is σ = 191648053050. Its totient is φ = 191648053048.

The previous prime is 191648053043. The next prime is 191648053087. The reversal of 191648053049 is 940350846191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111660900649 + 79987152400 = 334157^2 + 282820^2 .

It is a cyclic number.

It is not a de Polignac number, because 191648053049 - 2²⁰ = 191647004473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 191648052988 and 191648053006.

It is not a weakly prime, because it can be changed into another prime (191648053043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95824026524 + 95824026525.

It is an arithmetic number, because the mean of its divisors is an integer number (95824026525).

Almost surely, 2^191648053049 is an apocalyptic number.

It is an amenable number.

191648053049 is a deficient number, since it is larger than the sum of its proper divisors (1).

191648053049 is an equidigital number, since it uses as much as digits as its factorization.

191648053049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 191648053049 in words is "one hundred ninety-one billion, six hundred forty-eight million, fifty-three thousand, forty-nine".