13989180973 has 4 divisors (see below), whose sum is σ = 14124998368. Its totient is φ = 13853363580.

The previous prime is 13989180917. The next prime is 13989180991. The reversal of 13989180973 is 37908198931.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 13989180973 - 2²¹ = 13987083821 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 (13989180913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67908543 + ... + 67908748.

It is an arithmetic number, because the mean of its divisors is an integer number (3531249592).

Almost surely, 2^13989180973 is an apocalyptic number.

It is an amenable number.

13989180973 is a deficient number, since it is larger than the sum of its proper divisors (135817395).

13989180973 is a wasteful number, since it uses less digits than its factorization.

13989180973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135817394.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 13989180973 in words is "thirteen billion, nine hundred eighty-nine million, one hundred eighty thousand, nine hundred seventy-three".