18834641 has 4 divisors (see below), whose sum is σ = 21525312. Its totient is φ = 16143972.

The previous prime is 18834619. The next prime is 18834649. The reversal of 18834641 is 14643881.

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 an emirpimes, since its reverse is a distinct semiprime: 14643881 = 7 ⋅2091983.

It is a cyclic number.

It is not a de Polignac number, because 18834641 - 2¹⁴ = 18818257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18834649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345325 + ... + 1345338.

It is an arithmetic number, because the mean of its divisors is an integer number (5381328).

Almost surely, 2^18834641 is an apocalyptic number.

It is an amenable number.

18834641 is a deficient number, since it is larger than the sum of its proper divisors (2690671).

18834641 is an equidigital number, since it uses as much as digits as its factorization.

18834641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690670.

The product of its digits is 18432, while the sum is 35.

The square root of 18834641 is about 4339.8895147227. The cubic root of 18834641 is about 266.0637955414.

The spelling of 18834641 in words is "eighteen million, eight hundred thirty-four thousand, six hundred forty-one".