13138656290 has 8 divisors (see below), whose sum is σ = 23649581340. Its totient is φ = 5255462512.

The previous prime is 13138656263. The next prime is 13138656341. The reversal of 13138656290 is 9265683131.

It can be written as a sum of positive squares in 2 ways, for example, as 11783753809 + 1354902481 = 108553^2 + 36809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 656932805 + ... + 656932824.

Almost surely, 2^13138656290 is an apocalyptic number.

13138656290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138656290 is a deficient number, since it is larger than the sum of its proper divisors (10510925050).

13138656290 is a wasteful number, since it uses less digits than its factorization.

13138656290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313865636.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 13138656290 in words is "thirteen billion, one hundred thirty-eight million, six hundred fifty-six thousand, two hundred ninety".