18450146 has 32 divisors (see below), whose sum is σ = 33578496. Its totient is φ = 7488000.

The previous prime is 18450143. The next prime is 18450149. The reversal of 18450146 is 64105481.

It is an interprime number because it is at equal distance from previous prime (18450143) and next prime (18450149).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18450143) 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 15 ways as a sum of consecutive naturals, for example, 7826 + ... + 9906.

It is an arithmetic number, because the mean of its divisors is an integer number (1049328).

Almost surely, 2^18450146 is an apocalyptic number.

18450146 is a deficient number, since it is larger than the sum of its proper divisors (15128350).

18450146 is a wasteful number, since it uses less digits than its factorization.

18450146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18450146 is about 4295.3633140865. The cubic root of 18450146 is about 264.2408366249.

The spelling of 18450146 in words is "eighteen million, four hundred fifty thousand, one hundred forty-six".