18411405238 has 16 divisors (see below), whose sum is σ = 28539500544. Its totient is φ = 8898895080.

The previous prime is 18411405223. The next prime is 18411405281. The reversal of 18411405238 is 83250411481.

It is a junction number, because it is equal to n+sod(n) for n = 18411405197 and 18411405206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107470 + ... + 219937.

It is an arithmetic number, because the mean of its divisors is an integer number (1783718784).

Almost surely, 2^18411405238 is an apocalyptic number.

18411405238 is a deficient number, since it is larger than the sum of its proper divisors (10128095306).

18411405238 is a wasteful number, since it uses less digits than its factorization.

18411405238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328347.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 18411405238 in words is "eighteen billion, four hundred eleven million, four hundred five thousand, two hundred thirty-eight".