18227350441 has 8 divisors (see below), whose sum is σ = 18765767240. Its totient is φ = 17691343488.

The previous prime is 18227350433. The next prime is 18227350447. The reversal of 18227350441 is 14405372281.

It can be written as a sum of positive squares in 4 ways, for example, as 13179958416 + 5047392025 = 114804^2 + 71045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18227350441 - 2³ = 18227350433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 18227350441.

It is not an unprimeable number, because it can be changed into a prime (18227350447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587106 + ... + 617371.

It is an arithmetic number, because the mean of its divisors is an integer number (2345720905).

Almost surely, 2^18227350441 is an apocalyptic number.

It is an amenable number.

18227350441 is a deficient number, since it is larger than the sum of its proper divisors (538416799).

18227350441 is a wasteful number, since it uses less digits than its factorization.

18227350441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204923.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 18227350441 in words is "eighteen billion, two hundred twenty-seven million, three hundred fifty thousand, four hundred forty-one".