18241822406 has 4 divisors (see below), whose sum is σ = 27362733612. Its totient is φ = 9120911202.

The previous prime is 18241822397. The next prime is 18241822439. The reversal of 18241822406 is 60422814281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60422814281 = 17 ⋅3554283193.

It is a self number, because there is not a number n which added to its sum of digits gives 18241822406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560455600 + ... + 4560455603.

It is an arithmetic number, because the mean of its divisors is an integer number (6840683403).

Almost surely, 2^18241822406 is an apocalyptic number.

18241822406 is a deficient number, since it is larger than the sum of its proper divisors (9120911206).

18241822406 is an equidigital number, since it uses as much as digits as its factorization.

18241822406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120911205.

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 18241822406 in words is "eighteen billion, two hundred forty-one million, eight hundred twenty-two thousand, four hundred six".