18089002 has 8 divisors (see below), whose sum is σ = 27167076. Its totient is φ = 9033312.

The previous prime is 18088997. The next prime is 18089009. The reversal of 18089002 is 20098081.

It can be written as a sum of positive squares in 2 ways, for example, as 17715681 + 373321 = 4209^2 + 611^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18089009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403 + ... + 6910.

Almost surely, 2^18089002 is an apocalyptic number.

18089002 is a deficient number, since it is larger than the sum of its proper divisors (9078074).

18089002 is a wasteful number, since it uses less digits than its factorization.

18089002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18089002 is about 4253.1167395217. The cubic root of 18089002 is about 262.5053761560.

The spelling of 18089002 in words is "eighteen million, eighty-nine thousand, two".