13988521819 has 16 divisors (see below), whose sum is σ = 14438327904. Its totient is φ = 13544294400.

The previous prime is 13988521801. The next prime is 13988521837. The reversal of 13988521819 is 91812588931.

It is an interprime number because it is at equal distance from previous prime (13988521801) and next prime (13988521837).

It is a cyclic number.

It is not a de Polignac number, because 13988521819 - 2⁵ = 13988521787 is a prime.

It is a super-2 number, since 2×13988521819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13988521819.

It is not an unprimeable number, because it can be changed into a prime (13988521889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090492 + ... + 3095014.

It is an arithmetic number, because the mean of its divisors is an integer number (902395494).

Almost surely, 2^13988521819 is an apocalyptic number.

13988521819 is a deficient number, since it is larger than the sum of its proper divisors (449806085).

13988521819 is a wasteful number, since it uses less digits than its factorization.

13988521819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118.

The product of its digits is 1244160, while the sum is 55.

The spelling of 13988521819 in words is "thirteen billion, nine hundred eighty-eight million, five hundred twenty-one thousand, eight hundred nineteen".