13890478913 has 8 divisors (see below), whose sum is σ = 14446481280. Its totient is φ = 13343981040.

The previous prime is 13890478891. The next prime is 13890478991. The reversal of 13890478913 is 31987409831.

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

It is a cyclic number.

It is not a de Polignac number, because 13890478913 - 2¹² = 13890474817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13890478993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2373143 + ... + 2378988.

It is an arithmetic number, because the mean of its divisors is an integer number (1805810160).

Almost surely, 2^13890478913 is an apocalyptic number.

It is an amenable number.

13890478913 is a deficient number, since it is larger than the sum of its proper divisors (556002367).

13890478913 is an equidigital number, since it uses as much as digits as its factorization.

13890478913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752247.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 13890478913 in words is "thirteen billion, eight hundred ninety million, four hundred seventy-eight thousand, nine hundred thirteen".