18889030 has 16 divisors (see below), whose sum is σ = 34102944. Its totient is φ = 7532800.

The previous prime is 18889019. The next prime is 18889033. The reversal of 18889030 is 3098881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855 + ... + 6205.

It is an arithmetic number, because the mean of its divisors is an integer number (2131434).

Almost surely, 2^18889030 is an apocalyptic number.

18889030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18889030 is a deficient number, since it is larger than the sum of its proper divisors (15213914).

18889030 is a wasteful number, since it uses less digits than its factorization.

18889030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18889030 is about 4346.1511708637. The cubic root of 18889030 is about 266.3196545333.

The spelling of 18889030 in words is "eighteen million, eight hundred eighty-nine thousand, thirty".