18954005 has 8 divisors (see below), whose sum is σ = 25994112. Its totient is φ = 12997008.

The previous prime is 18953983. The next prime is 18954017. The reversal of 18954005 is 50045981.

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 18954005 - 2⁶ = 18953941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 270737 + ... + 270806.

It is an arithmetic number, because the mean of its divisors is an integer number (3249264).

Almost surely, 2^18954005 is an apocalyptic number.

It is an amenable number.

18954005 is a deficient number, since it is larger than the sum of its proper divisors (7040107).

18954005 is an equidigital number, since it uses as much as digits as its factorization.

18954005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541555.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 18954005 is about 4353.6197583161. The cubic root of 18954005 is about 266.6246696015.

Adding to 18954005 its reverse (50045981), we get a palindrome (68999986).

The spelling of 18954005 in words is "eighteen million, nine hundred fifty-four thousand, five".