1491046359191 has 2 divisors, whose sum is σ = 1491046359192. Its totient is φ = 1491046359190.

The previous prime is 1491046359113. The next prime is 1491046359193. The reversal of 1491046359191 is 1919536401941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1491046359191 - 2³⁴ = 1473866490007 is a prime.

It is a Sophie Germain prime.

Together with 1491046359193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491046359193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745523179595 + 745523179596.

It is an arithmetic number, because the mean of its divisors is an integer number (745523179596).

Almost surely, 2^{1491046359191} is an apocalyptic number.

1491046359191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491046359191 is an equidigital number, since it uses as much as digits as its factorization.

1491046359191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 1491046359191 in words is "one trillion, four hundred ninety-one billion, forty-six million, three hundred fifty-nine thousand, one hundred ninety-one".