1241660191 has 2 divisors, whose sum is σ = 1241660192. Its totient is φ = 1241660190.

The previous prime is 1241660183. The next prime is 1241660227. The reversal of 1241660191 is 1910661421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1241660191 - 2³ = 1241660183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241660891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620830095 + 620830096.

It is an arithmetic number, because the mean of its divisors is an integer number (620830096).

Almost surely, 2^1241660191 is an apocalyptic number.

1241660191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241660191 is an equidigital number, since it uses as much as digits as its factorization.

1241660191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1241660191 is about 35237.1989664332. The cubic root of 1241660191 is about 1074.8163208079.

The spelling of 1241660191 in words is "one billion, two hundred forty-one million, six hundred sixty thousand, one hundred ninety-one".