228489141581 has 4 divisors (see below), whose sum is σ = 233802842592. Its totient is φ = 223175440572.

The previous prime is 228489141577. The next prime is 228489141599. The reversal of 228489141581 is 185141984822.

228489141581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228489141581 - 2² = 228489141577 is a prime.

It is a super-2 number, since 2×228489141581² (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 (228489141521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656850441 + ... + 2656850526.

It is an arithmetic number, because the mean of its divisors is an integer number (58450710648).

Almost surely, 2^228489141581 is an apocalyptic number.

It is an amenable number.

228489141581 is a deficient number, since it is larger than the sum of its proper divisors (5313701011).

228489141581 is an equidigital number, since it uses as much as digits as its factorization.

228489141581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313701010.

The product of its digits is 1474560, while the sum is 53.

The spelling of 228489141581 in words is "two hundred twenty-eight billion, four hundred eighty-nine million, one hundred forty-one thousand, five hundred eighty-one".