13490357893 has 2 divisors, whose sum is σ = 13490357894. Its totient is φ = 13490357892.

The previous prime is 13490357887. The next prime is 13490357917. The reversal of 13490357893 is 39875309431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10842432129 + 2647925764 = 104127^2 + 51458^2 .

It is a cyclic number.

It is not a de Polignac number, because 13490357893 - 2²¹ = 13488260741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13490357893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13490357843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6745178946 + 6745178947.

It is an arithmetic number, because the mean of its divisors is an integer number (6745178947).

Almost surely, 2^13490357893 is an apocalyptic number.

It is an amenable number.

13490357893 is a deficient number, since it is larger than the sum of its proper divisors (1).

13490357893 is an equidigital number, since it uses as much as digits as its factorization.

13490357893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 13490357893 in words is "thirteen billion, four hundred ninety million, three hundred fifty-seven thousand, eight hundred ninety-three".