18012130 has 8 divisors (see below), whose sum is σ = 32421852. Its totient is φ = 7204848.

The previous prime is 18012121. The next prime is 18012131. The reversal of 18012130 is 3121081.

It can be written as a sum of positive squares in 2 ways, for example, as 17665209 + 346921 = 4203^2 + 589^2 .

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 (18012131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900597 + ... + 900616.

Almost surely, 2^18012130 is an apocalyptic number.

18012130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18012130 is a deficient number, since it is larger than the sum of its proper divisors (14409722).

18012130 is a wasteful number, since it uses less digits than its factorization.

18012130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801220.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 18012130 is about 4244.0699805729. The cubic root of 18012130 is about 262.1329958189.

The spelling of 18012130 in words is "eighteen million, twelve thousand, one hundred thirty".