191242741441 has 2 divisors, whose sum is σ = 191242741442. Its totient is φ = 191242741440.

The previous prime is 191242741427. The next prime is 191242741447. The reversal of 191242741441 is 144147242191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102605543041 + 88637198400 = 320321^2 + 297720^2 .

It is a cyclic number.

It is not a de Polignac number, because 191242741441 - 2¹¹ = 191242739393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191242741394 and 191242741403.

It is not a weakly prime, because it can be changed into another prime (191242741447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95621370720 + 95621370721.

It is an arithmetic number, because the mean of its divisors is an integer number (95621370721).

Almost surely, 2^191242741441 is an apocalyptic number.

It is an amenable number.

191242741441 is a deficient number, since it is larger than the sum of its proper divisors (1).

191242741441 is an equidigital number, since it uses as much as digits as its factorization.

191242741441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The spelling of 191242741441 in words is "one hundred ninety-one billion, two hundred forty-two million, seven hundred forty-one thousand, four hundred forty-one".