228818961793 has 16 divisors (see below), whose sum is σ = 245792718864. Its totient is φ = 212254064640.

The previous prime is 228818961773. The next prime is 228818961817. The reversal of 228818961793 is 397169818822.

It can be written as a sum of positive squares in 8 ways, for example, as 3524440689 + 225294521104 = 59367^2 + 474652^2 .

It is a cyclic number.

It is not a de Polignac number, because 228818961793 - 2²¹ = 228816864641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228818961703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109521 + ... + 685297.

It is an arithmetic number, because the mean of its divisors is an integer number (15362044929).

Almost surely, 2^228818961793 is an apocalyptic number.

It is an amenable number.

228818961793 is a deficient number, since it is larger than the sum of its proper divisors (16973757071).

228818961793 is a wasteful number, since it uses less digits than its factorization.

228818961793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576132.

The product of its digits is 20901888, while the sum is 64.

The spelling of 228818961793 in words is "two hundred twenty-eight billion, eight hundred eighteen million, nine hundred sixty-one thousand, seven hundred ninety-three".