13888790198 has 4 divisors (see below), whose sum is σ = 20833185300. Its totient is φ = 6944395098.

The previous prime is 13888790197. The next prime is 13888790207. The reversal of 13888790198 is 89109788831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13888790198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888790197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472197548 + ... + 3472197551.

It is an arithmetic number, because the mean of its divisors is an integer number (5208296325).

Almost surely, 2^13888790198 is an apocalyptic number.

13888790198 is a deficient number, since it is larger than the sum of its proper divisors (6944395102).

13888790198 is an equidigital number, since it uses as much as digits as its factorization.

13888790198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944395101.

The product of its (nonzero) digits is 6967296, while the sum is 62.

The spelling of 13888790198 in words is "thirteen billion, eight hundred eighty-eight million, seven hundred ninety thousand, one hundred ninety-eight".