228226908361 has 3 divisors (see below), whose sum is σ = 228227386093. Its totient is φ = 228226430630.

The previous prime is 228226908341. The next prime is 228226908383. The reversal of 228226908361 is 163809622822.

The square root of 228226908361 is 477731.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 228226908361 - 2⁹ = 228226907849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228226908331) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238866 + ... + 716596.

Almost surely, 2^228226908361 is an apocalyptic number.

228226908361 is the 477731-st square number.

228226908361 is the 238866-th centered octagonal number.

It is an amenable number.

228226908361 is a deficient number, since it is larger than the sum of its proper divisors (477732).

228226908361 is an frugal number, since it uses more digits than its factorization.

228226908361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955462 (or 477731 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

Multiplying 228226908361 by its sum of digits (49), we get a square (11183118509689 = 3344117²).

The spelling of 228226908361 in words is "two hundred twenty-eight billion, two hundred twenty-six million, nine hundred eight thousand, three hundred sixty-one".