13490357905 has 32 divisors (see below), whose sum is σ = 17271110304. Its totient is φ = 10080485376.

The previous prime is 13490357893. The next prime is 13490357917. The reversal of 13490357905 is 50975309431.

It is a Cunningham number, because it is equal to 116148²+1.

It is an interprime number because it is at equal distance from previous prime (13490357893) and next prime (13490357917).

It can be written as a sum of positive squares in 16 ways, for example, as 2987387649 + 10502970256 = 54657^2 + 102484^2 .

It is not a de Polignac number, because 13490357905 - 2⁵ = 13490357873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 6836499 + ... + 6838471.

It is an arithmetic number, because the mean of its divisors is an integer number (539722197).

Almost surely, 2^13490357905 is an apocalyptic number.

It is an amenable number.

13490357905 is a deficient number, since it is larger than the sum of its proper divisors (3780752399).

13490357905 is a wasteful number, since it uses less digits than its factorization.

13490357905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565.

The product of its (nonzero) digits is 510300, while the sum is 46.

The spelling of 13490357905 in words is "thirteen billion, four hundred ninety million, three hundred fifty-seven thousand, nine hundred five".