13508234491 has 2 divisors, whose sum is σ = 13508234492. Its totient is φ = 13508234490.

The previous prime is 13508234461. The next prime is 13508234543. The reversal of 13508234491 is 19443280531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19443280531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13508234491 - 2²⁵ = 13474680059 is a prime.

It is not a weakly prime, because it can be changed into another prime (13508234401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6754117245 + 6754117246.

It is an arithmetic number, because the mean of its divisors is an integer number (6754117246).

Almost surely, 2^13508234491 is an apocalyptic number.

13508234491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13508234491 is an equidigital number, since it uses as much as digits as its factorization.

13508234491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 13508234491 in words is "thirteen billion, five hundred eight million, two hundred thirty-four thousand, four hundred ninety-one".