1228681118 has 32 divisors (see below), whose sum is σ = 2126476800. Its totient is φ = 521557920.

The previous prime is 1228681081. The next prime is 1228681127. The reversal of 1228681118 is 8111868221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048673 + ... + 1049843.

It is an arithmetic number, because the mean of its divisors is an integer number (66452400).

Almost surely, 2^1228681118 is an apocalyptic number.

1228681118 is a deficient number, since it is larger than the sum of its proper divisors (897795682).

1228681118 is a wasteful number, since it uses less digits than its factorization.

1228681118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832.

The product of its digits is 12288, while the sum is 38.

The square root of 1228681118 is about 35052.5479530376. The cubic root of 1228681118 is about 1071.0581775557.

The spelling of 1228681118 in words is "one billion, two hundred twenty-eight million, six hundred eighty-one thousand, one hundred eighteen".