1138818066 has 16 divisors (see below), whose sum is σ = 2411614944. Its totient is φ = 357276224.

The previous prime is 1138818053. The next prime is 1138818071. The reversal of 1138818066 is 6608188311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5582340 + ... + 5582543.

It is an arithmetic number, because the mean of its divisors is an integer number (150725934).

Almost surely, 2^1138818066 is an apocalyptic number.

1138818066 is an abundant number, since it is smaller than the sum of its proper divisors (1272796878).

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

1138818066 is a wasteful number, since it uses less digits than its factorization.

1138818066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11164905.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1138818066 is about 33746.3785612619. The cubic root of 1138818066 is about 1044.2827785396.

The spelling of 1138818066 in words is "one billion, one hundred thirty-eight million, eight hundred eighteen thousand, sixty-six".