13485909491 has 2 divisors, whose sum is σ = 13485909492. Its totient is φ = 13485909490.

The previous prime is 13485909467. The next prime is 13485909553. The reversal of 13485909491 is 19490958431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13485909491 - 2¹⁰ = 13485908467 is a prime.

It is not a weakly prime, because it can be changed into another prime (13485909431) 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, 6742954745 + 6742954746.

It is an arithmetic number, because the mean of its divisors is an integer number (6742954746).

Almost surely, 2^13485909491 is an apocalyptic number.

13485909491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13485909491 is an equidigital number, since it uses as much as digits as its factorization.

13485909491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 13485909491 in words is "thirteen billion, four hundred eighty-five million, nine hundred nine thousand, four hundred ninety-one".