13942187918 has 4 divisors (see below), whose sum is σ = 20913281880. Its totient is φ = 6971093958.

The previous prime is 13942187873. The next prime is 13942187927. The reversal of 13942187918 is 81978124931.

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 13942187918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3485546978 + ... + 3485546981.

It is an arithmetic number, because the mean of its divisors is an integer number (5228320470).

Almost surely, 2^13942187918 is an apocalyptic number.

13942187918 is a deficient number, since it is larger than the sum of its proper divisors (6971093962).

13942187918 is an equidigital number, since it uses as much as digits as its factorization.

13942187918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971093961.

The product of its digits is 870912, while the sum is 53.

The spelling of 13942187918 in words is "thirteen billion, nine hundred forty-two million, one hundred eighty-seven thousand, nine hundred eighteen".