18489670 has 16 divisors (see below), whose sum is σ = 33588720. Its totient is φ = 7327584.

The previous prime is 18489643. The next prime is 18489673. The reversal of 18489670 is 7698481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18489673) 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, 7392 + ... + 9571.

It is an arithmetic number, because the mean of its divisors is an integer number (2099295).

Almost surely, 2^18489670 is an apocalyptic number.

18489670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18489670 is a deficient number, since it is larger than the sum of its proper divisors (15099050).

18489670 is a wasteful number, since it uses less digits than its factorization.

18489670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17079.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 18489670 is about 4299.9616277358. The cubic root of 18489670 is about 264.4293880879.

The spelling of 18489670 in words is "eighteen million, four hundred eighty-nine thousand, six hundred seventy".