18416958 has 16 divisors (see below), whose sum is σ = 42096000. Its totient is φ = 5261976.

The previous prime is 18416941. The next prime is 18416969. The reversal of 18416958 is 85961481.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 438499 = 18416958 / (1 + 8 + 4 + 1 + 6 + 9 + 5 + 8).

It is a congruent number.

It is an unprimeable number.

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, 219208 + ... + 219291.

It is an arithmetic number, because the mean of its divisors is an integer number (2631000).

Almost surely, 2^18416958 is an apocalyptic number.

18416958 is an abundant number, since it is smaller than the sum of its proper divisors (23679042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18416958 is a wasteful number, since it uses less digits than its factorization.

18416958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438511.

The product of its digits is 69120, while the sum is 42.

The square root of 18416958 is about 4291.4983397410. The cubic root of 18416958 is about 264.0823033104.

The spelling of 18416958 in words is "eighteen million, four hundred sixteen thousand, nine hundred fifty-eight".