18104951 has 8 divisors (see below), whose sum is σ = 18647664. Its totient is φ = 17565120.

The previous prime is 18104939. The next prime is 18104987. The reversal of 18104951 is 15940181.

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-18104951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104851) 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, 23411 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (2330958).

Almost surely, 2^18104951 is an apocalyptic number.

18104951 is a deficient number, since it is larger than the sum of its proper divisors (542713).

18104951 is an equidigital number, since it uses as much as digits as its factorization.

18104951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 18104951 is about 4254.9913043389. The cubic root of 18104951 is about 262.5825034694.

The spelling of 18104951 in words is "eighteen million, one hundred four thousand, nine hundred fifty-one".