16974191 has 12 divisors (see below), whose sum is σ = 18780192. Its totient is φ = 15327936.

The previous prime is 16974187. The next prime is 16974203. The reversal of 16974191 is 19147961.

It is not a de Polignac number, because 16974191 - 2² = 16974187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16974131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6875 + ... + 9011.

It is an arithmetic number, because the mean of its divisors is an integer number (1565016).

Almost surely, 2^16974191 is an apocalyptic number.

16974191 is a deficient number, since it is larger than the sum of its proper divisors (1806001).

16974191 is a wasteful number, since it uses less digits than its factorization.

16974191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210 (or 2197 counting only the distinct ones).

The product of its digits is 13608, while the sum is 38.

The square root of 16974191 is about 4119.9746358443. The cubic root of 16974191 is about 256.9979711872.

The spelling of 16974191 in words is "sixteen million, nine hundred seventy-four thousand, one hundred ninety-one".