18442958 has 16 divisors (see below), whose sum is σ = 29800320. Its totient is φ = 8532216.

The previous prime is 18442891. The next prime is 18442967. The reversal of 18442958 is 85924481.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4010 + ... + 7277.

It is an arithmetic number, because the mean of its divisors is an integer number (1862520).

Almost surely, 2^18442958 is an apocalyptic number.

18442958 is a deficient number, since it is larger than the sum of its proper divisors (11357362).

18442958 is a wasteful number, since it uses less digits than its factorization.

18442958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its digits is 92160, while the sum is 41.

The square root of 18442958 is about 4294.5265163927. The cubic root of 18442958 is about 264.2065169354.

The spelling of 18442958 in words is "eighteen million, four hundred forty-two thousand, nine hundred fifty-eight".