16893374391 has 16 divisors (see below), whose sum is σ = 25834552320. Its totient is φ = 10898950680.

The previous prime is 16893374387. The next prime is 16893374401. The reversal of 16893374391 is 19347339861.

It is a happy number.

16893374391 is a `hidden beast` number, since 168 + 93 + 3 + 7 + 4 + 391 = 666.

It is not a de Polignac number, because 16893374391 - 2² = 16893374387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16893374191) 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, 10090785 + ... + 10092458.

It is an arithmetic number, because the mean of its divisors is an integer number (1614659520).

Almost surely, 2^16893374391 is an apocalyptic number.

16893374391 is a deficient number, since it is larger than the sum of its proper divisors (8941177929).

16893374391 is a wasteful number, since it uses less digits than its factorization.

16893374391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183283 (or 20183277 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 16893374391 in words is "sixteen billion, eight hundred ninety-three million, three hundred seventy-four thousand, three hundred ninety-one".