13508987413 has 2 divisors, whose sum is σ = 13508987414. Its totient is φ = 13508987412.

The previous prime is 13508987369. The next prime is 13508987431. The reversal of 13508987413 is 31478980531.

It is a happy number.

Together with next prime (13508987431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12556771249 + 952216164 = 112057^2 + 30858^2 .

It is a cyclic number.

It is not a de Polignac number, because 13508987413 - 2¹³ = 13508979221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13508987473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6754493706 + 6754493707.

It is an arithmetic number, because the mean of its divisors is an integer number (6754493707).

Almost surely, 2^13508987413 is an apocalyptic number.

It is an amenable number.

13508987413 is a deficient number, since it is larger than the sum of its proper divisors (1).

13508987413 is an equidigital number, since it uses as much as digits as its factorization.

13508987413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 13508987413 in words is "thirteen billion, five hundred eight million, nine hundred eighty-seven thousand, four hundred thirteen".