1118638066 has 32 divisors (see below), whose sum is σ = 2073899520. Its totient is φ = 440669376.

The previous prime is 1118638043. The next prime is 1118638099. The reversal of 1118638066 is 6608368111.

1118638066 = 3461² + 3462² + ... + 3551².

It is a super-3 number, since 3×1118638066³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 30640 + ... + 56356.

It is an arithmetic number, because the mean of its divisors is an integer number (64809360).

Almost surely, 2^1118638066 is an apocalyptic number.

1118638066 is a deficient number, since it is larger than the sum of its proper divisors (955261454).

1118638066 is a wasteful number, since it uses less digits than its factorization.

1118638066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25978.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1118638066 is about 33446.0470907998. The cubic root of 1118638066 is about 1038.0777071155.

The spelling of 1118638066 in words is "one billion, one hundred eighteen million, six hundred thirty-eight thousand, sixty-six".