18879241 has 4 divisors (see below), whose sum is σ = 18888832. Its totient is φ = 18869652.

The previous prime is 18879239. The next prime is 18879253. The reversal of 18879241 is 14297881.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18879241 - 2¹ = 18879239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18879194 and 18879203.

It is not an unprimeable number, because it can be changed into a prime (18879271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645 + ... + 6178.

It is an arithmetic number, because the mean of its divisors is an integer number (4722208).

Almost surely, 2^18879241 is an apocalyptic number.

It is an amenable number.

18879241 is a deficient number, since it is larger than the sum of its proper divisors (9591).

18879241 is an equidigital number, since it uses as much as digits as its factorization.

18879241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9590.

The product of its digits is 32256, while the sum is 40.

The square root of 18879241 is about 4345.0248560854. The cubic root of 18879241 is about 266.2736409904.

The spelling of 18879241 in words is "eighteen million, eight hundred seventy-nine thousand, two hundred forty-one".