18314641 has 4 divisors (see below), whose sum is σ = 18356800. Its totient is φ = 18272484.

The previous prime is 18314623. The next prime is 18314657. The reversal of 18314641 is 14641381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18314641 - 2⁹ = 18314129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18311641) 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, 20421 + ... + 21298.

It is an arithmetic number, because the mean of its divisors is an integer number (4589200).

Almost surely, 2^18314641 is an apocalyptic number.

It is an amenable number.

18314641 is a deficient number, since it is larger than the sum of its proper divisors (42159).

18314641 is an equidigital number, since it uses as much as digits as its factorization.

18314641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42158.

The product of its digits is 2304, while the sum is 28.

The square root of 18314641 is about 4279.5608419556. The cubic root of 18314641 is about 263.5923508518.

The spelling of 18314641 in words is "eighteen million, three hundred fourteen thousand, six hundred forty-one".