1491747245239 has 2 divisors, whose sum is σ = 1491747245240. Its totient is φ = 1491747245238.

The previous prime is 1491747245207. The next prime is 1491747245281. The reversal of 1491747245239 is 9325427471941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1491747245239 - 2⁵ = 1491747245207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491747240239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745873622619 + 745873622620.

It is an arithmetic number, because the mean of its divisors is an integer number (745873622620).

Almost surely, 2^{1491747245239} is an apocalyptic number.

1491747245239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491747245239 is an equidigital number, since it uses as much as digits as its factorization.

1491747245239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 58.

The spelling of 1491747245239 in words is "one trillion, four hundred ninety-one billion, seven hundred forty-seven million, two hundred forty-five thousand, two hundred thirty-nine".