13930561893 has 4 divisors (see below), whose sum is σ = 18574082528. Its totient is φ = 9287041260.

The previous prime is 13930561871. The next prime is 13930561903. The reversal of 13930561893 is 39816503931.

13930561893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13930561893 - 2¹⁴ = 13930545509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13930561093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2321760313 + ... + 2321760318.

It is an arithmetic number, because the mean of its divisors is an integer number (4643520632).

Almost surely, 2^13930561893 is an apocalyptic number.

It is an amenable number.

13930561893 is a deficient number, since it is larger than the sum of its proper divisors (4643520635).

13930561893 is an equidigital number, since it uses as much as digits as its factorization.

13930561893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643520634.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 13930561893 in words is "thirteen billion, nine hundred thirty million, five hundred sixty-one thousand, eight hundred ninety-three".