228874723181 has 8 divisors (see below), whose sum is σ = 246804372024. Its totient is φ = 210991345920.

The previous prime is 228874723177. The next prime is 228874723193. The reversal of 228874723181 is 181327478822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14649229156 + 214225494025 = 121034^2 + 462845^2 .

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 228874723181 - 2² = 228874723177 is a prime.

It is a super-2 number, since 2×228874723181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228874723141) 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, 11557616 + ... + 11577401.

It is an arithmetic number, because the mean of its divisors is an integer number (30850546503).

Almost surely, 2^228874723181 is an apocalyptic number.

It is an amenable number.

228874723181 is a deficient number, since it is larger than the sum of its proper divisors (17929648843).

228874723181 is a wasteful number, since it uses less digits than its factorization.

228874723181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23135791.

The product of its digits is 2408448, while the sum is 53.

The spelling of 228874723181 in words is "two hundred twenty-eight billion, eight hundred seventy-four million, seven hundred twenty-three thousand, one hundred eighty-one".