228193156839 has 4 divisors (see below), whose sum is σ = 304257542456. Its totient is φ = 152128771224.

The previous prime is 228193156783. The next prime is 228193156883. The reversal of 228193156839 is 938651391822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228193156839 - 2¹⁶ = 228193091303 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 (228193156889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38032192804 + ... + 38032192809.

It is an arithmetic number, because the mean of its divisors is an integer number (76064385614).

Almost surely, 2^228193156839 is an apocalyptic number.

228193156839 is a deficient number, since it is larger than the sum of its proper divisors (76064385617).

228193156839 is an equidigital number, since it uses as much as digits as its factorization.

228193156839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76064385616.

The product of its digits is 5598720, while the sum is 57.

The spelling of 228193156839 in words is "two hundred twenty-eight billion, one hundred ninety-three million, one hundred fifty-six thousand, eight hundred thirty-nine".