16874195945 has 4 divisors (see below), whose sum is σ = 20249035140. Its totient is φ = 13499356752.

The previous prime is 16874195917. The next prime is 16874195953. The reversal of 16874195945 is 54959147861.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4514092969 + 12360102976 = 67187^2 + 111176^2 .

It is a cyclic number.

It is not a de Polignac number, because 16874195945 - 2²⁸ = 16605760489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687419590 + ... + 1687419599.

It is an arithmetic number, because the mean of its divisors is an integer number (5062258785).

Almost surely, 2^16874195945 is an apocalyptic number.

It is an amenable number.

16874195945 is a deficient number, since it is larger than the sum of its proper divisors (3374839195).

16874195945 is an equidigital number, since it uses as much as digits as its factorization.

16874195945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374839194.

The product of its digits is 10886400, while the sum is 59.

The spelling of 16874195945 in words is "sixteen billion, eight hundred seventy-four million, one hundred ninety-five thousand, nine hundred forty-five".