17974945 has 8 divisors (see below), whose sum is σ = 21740544. Its totient is φ = 14266224.

The previous prime is 17974939. The next prime is 17974963. The reversal of 17974945 is 54947971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17974945 - 2⁹ = 17974433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17974895 and 17974904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13519 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (2717568).

Almost surely, 2^17974945 is an apocalyptic number.

It is an amenable number.

17974945 is a deficient number, since it is larger than the sum of its proper divisors (3765599).

17974945 is a wasteful number, since it uses less digits than its factorization.

17974945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439.

The product of its digits is 317520, while the sum is 46.

The square root of 17974945 is about 4239.6868988169. The cubic root of 17974945 is about 261.9524854107.

The spelling of 17974945 in words is "seventeen million, nine hundred seventy-four thousand, nine hundred forty-five".