18241272406 has 16 divisors (see below), whose sum is σ = 31272710400. Its totient is φ = 7817198760.

The previous prime is 18241272389. The next prime is 18241272409. The reversal of 18241272406 is 60427214281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18241272409) 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 7 ways as a sum of consecutive naturals, for example, 275301 + ... + 335071.

It is an arithmetic number, because the mean of its divisors is an integer number (1954544400).

Almost surely, 2^18241272406 is an apocalyptic number.

18241272406 is a deficient number, since it is larger than the sum of its proper divisors (13031437994).

18241272406 is a wasteful number, since it uses less digits than its factorization.

18241272406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81579.

The product of its (nonzero) digits is 43008, while the sum is 37.

Adding to 18241272406 its reverse (60427214281), we get a palindrome (78668486687).

The spelling of 18241272406 in words is "eighteen billion, two hundred forty-one million, two hundred seventy-two thousand, four hundred six".