228018133905407 has 4 divisors (see below), whose sum is σ = 228019629817800. Its totient is φ = 228016637993016.

The previous prime is 228018133905403. The next prime is 228018133905433. The reversal of 228018133905407 is 704509331810822.

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 228018133905407 - 2² = 228018133905403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228018133905403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747727532 + ... + 748032417.

It is an arithmetic number, because the mean of its divisors is an integer number (57004907454450).

Almost surely, 2^{228018133905407} is an apocalyptic number.

228018133905407 is a deficient number, since it is larger than the sum of its proper divisors (1495912393).

228018133905407 is a wasteful number, since it uses less digits than its factorization.

228018133905407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495912392.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 228018133905407 in words is "two hundred twenty-eight trillion, eighteen billion, one hundred thirty-three million, nine hundred five thousand, four hundred seven".