18103641 has 8 divisors (see below), whose sum is σ = 24534144. Its totient is φ = 11871120.

The previous prime is 18103639. The next prime is 18103663. The reversal of 18103641 is 14630181.

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

It is not a de Polignac number, because 18103641 - 2¹ = 18103639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18103681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49281 + ... + 49646.

It is an arithmetic number, because the mean of its divisors is an integer number (3066768).

Almost surely, 2^18103641 is an apocalyptic number.

It is an amenable number.

18103641 is a deficient number, since it is larger than the sum of its proper divisors (6430503).

18103641 is an equidigital number, since it uses as much as digits as its factorization.

18103641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98991.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18103641 is about 4254.8373646944. The cubic root of 18103641 is about 262.5761701856.

The spelling of 18103641 in words is "eighteen million, one hundred three thousand, six hundred forty-one".