228185888697 has 112 divisors (see below), whose sum is σ = 379859663568. Its totient is φ = 136099284480.

The previous prime is 228185888681. The next prime is 228185888743. The reversal of 228185888697 is 796888581822.

228185888697 is a `hidden beast` number, since 2 + 28 + 18 + 588 + 8 + 6 + 9 + 7 = 666.

228185888697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 34426575936 + 193759312761 = 185544^2 + 440181^2 .

It is not a de Polignac number, because 228185888697 - 2⁴ = 228185888681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228185888657) 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 111 ways as a sum of consecutive naturals, for example, 102739047 + ... + 102741267.

It is an arithmetic number, because the mean of its divisors is an integer number (3391604139).

Almost surely, 2^228185888697 is an apocalyptic number.

228185888697 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

228185888697 is a deficient number, since it is larger than the sum of its proper divisors (151673774871).

228185888697 is a wasteful number, since it uses less digits than its factorization.

228185888697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2567 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 72.

The spelling of 228185888697 in words is "two hundred twenty-eight billion, one hundred eighty-five million, eight hundred eighty-eight thousand, six hundred ninety-seven".