18131002 has 8 divisors (see below), whose sum is σ = 27775296. Its totient is φ = 8872572.

The previous prime is 18130967. The next prime is 18131011. The reversal of 18131002 is 20013181.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96348 + ... + 96535.

It is an arithmetic number, because the mean of its divisors is an integer number (3471912).

Almost surely, 2^18131002 is an apocalyptic number.

18131002 is a deficient number, since it is larger than the sum of its proper divisors (9644294).

18131002 is a wasteful number, since it uses less digits than its factorization.

18131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192932.

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

The square root of 18131002 is about 4258.0514322868. The cubic root of 18131002 is about 262.7083853989.

Adding to 18131002 its reverse (20013181), we get a palindrome (38144183).

The spelling of 18131002 in words is "eighteen million, one hundred thirty-one thousand, two".