18416047 has 8 divisors (see below), whose sum is σ = 20369216. Its totient is φ = 16539552.

The previous prime is 18416033. The next prime is 18416053. The reversal of 18416047 is 74061481.

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 18416047 - 2⁷ = 18415919 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 (18416017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18663 + ... + 19624.

It is an arithmetic number, because the mean of its divisors is an integer number (2546152).

Almost surely, 2^18416047 is an apocalyptic number.

18416047 is a deficient number, since it is larger than the sum of its proper divisors (1953169).

18416047 is a wasteful number, since it uses less digits than its factorization.

18416047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38337.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18416047 is about 4291.3921983431. The cubic root of 18416047 is about 264.0779489368.

The spelling of 18416047 in words is "eighteen million, four hundred sixteen thousand, forty-seven".