18941105 has 4 divisors (see below), whose sum is σ = 22729332. Its totient is φ = 15152880.

The previous prime is 18941071. The next prime is 18941123. The reversal of 18941105 is 50114981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9935104 + 9006001 = 3152^2 + 3001^2 .

It is not a de Polignac number, because 18941105 - 2²⁰ = 17892529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894106 + ... + 1894115.

It is an arithmetic number, because the mean of its divisors is an integer number (5682333).

Almost surely, 2^18941105 is an apocalyptic number.

It is an amenable number.

18941105 is a deficient number, since it is larger than the sum of its proper divisors (3788227).

18941105 is an equidigital number, since it uses as much as digits as its factorization.

18941105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788226.

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

The square root of 18941105 is about 4352.1379803494. The cubic root of 18941105 is about 266.5641680730.

The spelling of 18941105 in words is "eighteen million, nine hundred forty-one thousand, one hundred five".