1282618138 has 16 divisors (see below), whose sum is σ = 2013932160. Its totient is φ = 611484016.

The previous prime is 1282618133. The next prime is 1282618189. The reversal of 1282618138 is 8318162821.

It is a self number, because there is not a number n which added to its sum of digits gives 1282618138.

It is not an unprimeable number, because it can be changed into a prime (1282618133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29398 + ... + 58561.

It is an arithmetic number, because the mean of its divisors is an integer number (125870760).

Almost surely, 2^1282618138 is an apocalyptic number.

1282618138 is a deficient number, since it is larger than the sum of its proper divisors (731314022).

1282618138 is a wasteful number, since it uses less digits than its factorization.

1282618138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88301.

The product of its digits is 36864, while the sum is 40.

The square root of 1282618138 is about 35813.6585397248. The cubic root of 1282618138 is about 1086.5068258045.

The spelling of 1282618138 in words is "one billion, two hundred eighty-two million, six hundred eighteen thousand, one hundred thirty-eight".