18103147 has 8 divisors (see below), whose sum is σ = 19494000. Its totient is φ = 16748544.

The previous prime is 18103133. The next prime is 18103159. The reversal of 18103147 is 74130181.

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

It is a cyclic number.

It is not a de Polignac number, because 18103147 - 2¹¹ = 18101099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18103117) 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 7 ways as a sum of consecutive naturals, for example, 8022 + ... + 10027.

It is an arithmetic number, because the mean of its divisors is an integer number (2436750).

Almost surely, 2^18103147 is an apocalyptic number.

18103147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18103147 is a deficient number, since it is larger than the sum of its proper divisors (1390853).

18103147 is a wasteful number, since it uses less digits than its factorization.

18103147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18125.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 18103147 is about 4254.7793127259. The cubic root of 18103147 is about 262.5737818298.

The spelling of 18103147 in words is "eighteen million, one hundred three thousand, one hundred forty-seven".