13973870187 has 6 divisors (see below), whose sum is σ = 20184479172. Its totient is φ = 9315913452.

The previous prime is 13973870173. The next prime is 13973870191. The reversal of 13973870187 is 78107837931.

It is a happy number.

13973870187 is a `hidden beast` number, since 1 + 397 + 3 + 8 + 70 + 187 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13973870187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13973870117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 776326113 + ... + 776326130.

It is an arithmetic number, because the mean of its divisors is an integer number (3364079862).

Almost surely, 2^13973870187 is an apocalyptic number.

13973870187 is a deficient number, since it is larger than the sum of its proper divisors (6210608985).

13973870187 is a wasteful number, since it uses less digits than its factorization.

13973870187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552652249 (or 1552652246 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 13973870187 in words is "thirteen billion, nine hundred seventy-three million, eight hundred seventy thousand, one hundred eighty-seven".