18329641 has 8 divisors (see below), whose sum is σ = 20143584. Its totient is φ = 16540320.

The previous prime is 18329629. The next prime is 18329677. The reversal of 18329641 is 14692381.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18329641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18329597 and 18329606.

It is not an unprimeable number, because it can be changed into a prime (18329611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4575 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (2517948).

Almost surely, 2^18329641 is an apocalyptic number.

18329641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18329641 is a deficient number, since it is larger than the sum of its proper divisors (1813943).

18329641 is a wasteful number, since it uses less digits than its factorization.

18329641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311.

The product of its digits is 10368, while the sum is 34.

The square root of 18329641 is about 4281.3129995365. The cubic root of 18329641 is about 263.6642934090.

The spelling of 18329641 in words is "eighteen million, three hundred twenty-nine thousand, six hundred forty-one".