1491588097147 has 2 divisors, whose sum is σ = 1491588097148. Its totient is φ = 1491588097146.

The previous prime is 1491588097127. The next prime is 1491588097231. The reversal of 1491588097147 is 7417908851941.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1491588097147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1491588097127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745794048573 + 745794048574.

It is an arithmetic number, because the mean of its divisors is an integer number (745794048574).

Almost surely, 2^{1491588097147} is an apocalyptic number.

1491588097147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491588097147 is an equidigital number, since it uses as much as digits as its factorization.

1491588097147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 64.

The spelling of 1491588097147 in words is "one trillion, four hundred ninety-one billion, five hundred eighty-eight million, ninety-seven thousand, one hundred forty-seven".