18948441 has 4 divisors (see below), whose sum is σ = 25264592. Its totient is φ = 12632292.

The previous prime is 18948431. The next prime is 18948463. The reversal of 18948441 is 14484981.

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 not a de Polignac number, because 18948441 - 2⁷ = 18948313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18948441.

It is not an unprimeable number, because it can be changed into a prime (18948431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158071 + ... + 3158076.

It is an arithmetic number, because the mean of its divisors is an integer number (6316148).

Almost surely, 2^18948441 is an apocalyptic number.

It is an amenable number.

18948441 is a deficient number, since it is larger than the sum of its proper divisors (6316151).

18948441 is an equidigital number, since it uses as much as digits as its factorization.

18948441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316150.

The product of its digits is 36864, while the sum is 39.

The square root of 18948441 is about 4352.9807029207. The cubic root of 18948441 is about 266.5985775813.

The spelling of 18948441 in words is "eighteen million, nine hundred forty-eight thousand, four hundred forty-one".