18057146 has 8 divisors (see below), whose sum is σ = 27467424. Its totient is φ = 8901340.

The previous prime is 18057107. The next prime is 18057173. The reversal of 18057146 is 64175081.

It is a happy number.

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

It is a super-3 number, since 3×18057146³ (a number of 23 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 63440 + ... + 63723.

It is an arithmetic number, because the mean of its divisors is an integer number (3433428).

Almost surely, 2^18057146 is an apocalyptic number.

18057146 is a deficient number, since it is larger than the sum of its proper divisors (9410278).

18057146 is a wasteful number, since it uses less digits than its factorization.

18057146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127236.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18057146 is about 4249.3700709635. The cubic root of 18057146 is about 262.3511888220.

The spelling of 18057146 in words is "eighteen million, fifty-seven thousand, one hundred forty-six".