18411748939 has 4 divisors (see below), whose sum is σ = 18439688520. Its totient is φ = 18383809360.

The previous prime is 18411748931. The next prime is 18411748963. The reversal of 18411748939 is 93984711481.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18411748939 - 2³ = 18411748931 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 18411748939.

It is not an unprimeable number, because it can be changed into a prime (18411748931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13968802 + ... + 13970119.

It is an arithmetic number, because the mean of its divisors is an integer number (4609922130).

Almost surely, 2^18411748939 is an apocalyptic number.

18411748939 is a deficient number, since it is larger than the sum of its proper divisors (27939581).

18411748939 is an equidigital number, since it uses as much as digits as its factorization.

18411748939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27939580.

The product of its digits is 1741824, while the sum is 55.

The spelling of 18411748939 in words is "eighteen billion, four hundred eleven million, seven hundred forty-eight thousand, nine hundred thirty-nine".