1138779606 has 32 divisors (see below), whose sum is σ = 2357222400. Its totient is φ = 366380640.

The previous prime is 1138779589. The next prime is 1138779619. The reversal of 1138779606 is 6069778311.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64485 + ... + 80223.

It is an arithmetic number, because the mean of its divisors is an integer number (73663200).

Almost surely, 2^1138779606 is an apocalyptic number.

1138779606 is an abundant number, since it is smaller than the sum of its proper divisors (1218442794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138779606 is a wasteful number, since it uses less digits than its factorization.

1138779606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1138779606 is about 33745.8087175282. The cubic root of 1138779606 is about 1044.2710226180.

The spelling of 1138779606 in words is "one billion, one hundred thirty-eight million, seven hundred seventy-nine thousand, six hundred six".