1228538558 has 32 divisors (see below), whose sum is σ = 2104050816. Its totient is φ = 532965888.

The previous prime is 1228538551. The next prime is 1228538561. The reversal of 1228538558 is 8558358221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228538551) 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, 481835 + ... + 484377.

It is an arithmetic number, because the mean of its divisors is an integer number (65751588).

Almost surely, 2^1228538558 is an apocalyptic number.

1228538558 is a deficient number, since it is larger than the sum of its proper divisors (875512258).

1228538558 is a wasteful number, since it uses less digits than its factorization.

1228538558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668.

The product of its digits is 768000, while the sum is 47.

The square root of 1228538558 is about 35050.5143756836. The cubic root of 1228538558 is about 1071.0167521179.

The spelling of 1228538558 in words is "one billion, two hundred twenty-eight million, five hundred thirty-eight thousand, five hundred fifty-eight".