18956066 has 8 divisors (see below), whose sum is σ = 29351424. Its totient is φ = 9172260.

The previous prime is 18956057. The next prime is 18956107. The reversal of 18956066 is 66065981.

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

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 3 ways as a sum of consecutive naturals, for example, 152810 + ... + 152933.

It is an arithmetic number, because the mean of its divisors is an integer number (3668928).

Almost surely, 2^18956066 is an apocalyptic number.

18956066 is a deficient number, since it is larger than the sum of its proper divisors (10395358).

18956066 is a wasteful number, since it uses less digits than its factorization.

18956066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305776.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 18956066 is about 4353.8564514692. The cubic root of 18956066 is about 266.6343332325.

The spelling of 18956066 in words is "eighteen million, nine hundred fifty-six thousand, sixty-six".