16393385394 has 20 divisors (see below), whose sum is σ = 36733326894. Its totient is φ = 5464461744.

The previous prime is 16393385389. The next prime is 16393385417. The reversal of 16393385394 is 49358339361.

16393385394 is a `hidden beast` number, since 16 + 3 + 93 + 3 + 8 + 539 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16275380625 + 118004769 = 127575^2 + 10863^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 16393385394.

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 in 9 ways as a sum of consecutive naturals, for example, 50596707 + ... + 50597030.

Almost surely, 2^16393385394 is an apocalyptic number.

16393385394 is an abundant number, since it is smaller than the sum of its proper divisors (20339941500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16393385394 is a wasteful number, since it uses less digits than its factorization.

16393385394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101193751 (or 101193742 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The spelling of 16393385394 in words is "sixteen billion, three hundred ninety-three million, three hundred eighty-five thousand, three hundred ninety-four".