13876621989 has 8 divisors (see below), whose sum is σ = 18710052480. Its totient is φ = 9147136416.

The previous prime is 13876621981. The next prime is 13876621999. The reversal of 13876621989 is 98912667831.

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

It is not a de Polignac number, because 13876621989 - 2³ = 13876621981 is a prime.

It is a super-2 number, since 2×13876621989² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13876621981) 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, 25985917 + ... + 25986450.

It is an arithmetic number, because the mean of its divisors is an integer number (2338756560).

Almost surely, 2^13876621989 is an apocalyptic number.

It is an amenable number.

13876621989 is a deficient number, since it is larger than the sum of its proper divisors (4833430491).

13876621989 is an equidigital number, since it uses as much as digits as its factorization.

13876621989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51972459.

The product of its digits is 7838208, while the sum is 60.

The spelling of 13876621989 in words is "thirteen billion, eight hundred seventy-six million, six hundred twenty-one thousand, nine hundred eighty-nine".