18103486 has 8 divisors (see below), whose sum is σ = 27419184. Its totient is φ = 8963760.

The previous prime is 18103457. The next prime is 18103493. The reversal of 18103486 is 68430181.

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

It is a congruent number.

It is an unprimeable number.

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, 43735 + ... + 44146.

It is an arithmetic number, because the mean of its divisors is an integer number (3427398).

Almost surely, 2^18103486 is an apocalyptic number.

18103486 is a deficient number, since it is larger than the sum of its proper divisors (9315698).

18103486 is a wasteful number, since it uses less digits than its factorization.

18103486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87986.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18103486 is about 4254.8191500932. The cubic root of 18103486 is about 262.5754208074.

The spelling of 18103486 in words is "eighteen million, one hundred three thousand, four hundred eighty-six".