18946930 has 16 divisors (see below), whose sum is σ = 34614720. Its totient is φ = 7465392.

The previous prime is 18946919. The next prime is 18946937. The reversal of 18946930 is 3964981.

It is not an unprimeable number, because it can be changed into a prime (18946937) 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 7 ways as a sum of consecutive naturals, for example, 13470 + ... + 14809.

It is an arithmetic number, because the mean of its divisors is an integer number (2163420).

Almost surely, 2^18946930 is an apocalyptic number.

18946930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18946930 is a deficient number, since it is larger than the sum of its proper divisors (15667790).

18946930 is a wasteful number, since it uses less digits than its factorization.

18946930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28353.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 18946930 is about 4352.8071402257. The cubic root of 18946930 is about 266.5914909621.

The spelling of 18946930 in words is "eighteen million, nine hundred forty-six thousand, nine hundred thirty".