1118866680 has 192 divisors, whose sum is σ = 3932042400. Its totient is φ = 274959360.

The previous prime is 1118866673. The next prime is 1118866687. The reversal of 1118866680 is 866688111.

It is an interprime number because it is at equal distance from previous prime (1118866673) and next prime (1118866687).

It is a super-2 number, since 2×1118866680² = 2503725295228444800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118866687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250870 + ... + 255290.

Almost surely, 2^1118866680 is an apocalyptic number.

1118866680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118866680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966021200).

1118866680 is an abundant number, since it is smaller than the sum of its proper divisors (2813175720).

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

1118866680 is a wasteful number, since it uses less digits than its factorization.

1118866680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494 (or 4487 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 1118866680 is about 33449.4645697057. The cubic root of 1118866680 is about 1038.1484189746.

The spelling of 1118866680 in words is "one billion, one hundred eighteen million, eight hundred sixty-six thousand, six hundred eighty".