16188678394 has 16 divisors (see below), whose sum is σ = 28086383808. Its totient is φ = 6854414112.

The previous prime is 16188678391. The next prime is 16188678403. The reversal of 16188678394 is 49387688161.

It is not an unprimeable number, because it can be changed into a prime (16188678391) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6964707 + ... + 6967030.

It is an arithmetic number, because the mean of its divisors is an integer number (1755398988).

Almost surely, 2^16188678394 is an apocalyptic number.

16188678394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16188678394 is a deficient number, since it is larger than the sum of its proper divisors (11897705414).

16188678394 is a wasteful number, since it uses less digits than its factorization.

16188678394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13931829.

The product of its digits is 13934592, while the sum is 61.

It can be divided in two parts, 1618867 and 8394, that added together give a palindrome (1627261).

The spelling of 16188678394 in words is "sixteen billion, one hundred eighty-eight million, six hundred seventy-eight thousand, three hundred ninety-four".