18412839 has 12 divisors (see below), whose sum is σ = 27581736. Its totient is φ = 12275064.

The previous prime is 18412817. The next prime is 18412847. The reversal of 18412839 is 93821481.

It is not a de Polignac number, because 18412839 - 2⁷ = 18412711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412859) 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 11 ways as a sum of consecutive naturals, for example, 37644 + ... + 38129.

It is an arithmetic number, because the mean of its divisors is an integer number (2298478).

Almost surely, 2^18412839 is an apocalyptic number.

18412839 is a deficient number, since it is larger than the sum of its proper divisors (9168897).

18412839 is an frugal number, since it uses more digits than its factorization.

18412839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75788 (or 75776 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18412839 is about 4291.0184105874. The cubic root of 18412839 is about 264.0626142805.

The spelling of 18412839 in words is "eighteen million, four hundred twelve thousand, eight hundred thirty-nine".