228285921919 has 8 divisors (see below), whose sum is σ = 250478722512. Its totient is φ = 206333043840.

The previous prime is 228285921917. The next prime is 228285921949. The reversal of 228285921919 is 919129582822.

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

It is not a de Polignac number, because 228285921919 - 2¹ = 228285921917 is a prime.

It is a super-2 number, since 2×228285921919² (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 (228285921911) 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, 59978634 + ... + 59982439.

It is an arithmetic number, because the mean of its divisors is an integer number (31309840314).

Almost surely, 2^228285921919 is an apocalyptic number.

228285921919 is a deficient number, since it is larger than the sum of its proper divisors (22192800593).

228285921919 is a wasteful number, since it uses less digits than its factorization.

228285921919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119961257.

The product of its digits is 3732480, while the sum is 58.

The spelling of 228285921919 in words is "two hundred twenty-eight billion, two hundred eighty-five million, nine hundred twenty-one thousand, nine hundred nineteen".