1116889920 has 168 divisors, whose sum is σ = 4044025440. Its totient is φ = 282147840.

The previous prime is 1116889877. The next prime is 1116889951. The reversal of 1116889920 is 299886111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44515 + ... + 64925.

It is an arithmetic number, because the mean of its divisors is an integer number (24071580).

Almost surely, 2^1116889920 is an apocalyptic number.

1116889920 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 1116889920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022012720).

1116889920 is an abundant number, since it is smaller than the sum of its proper divisors (2927135520).

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

1116889920 is a wasteful number, since it uses less digits than its factorization.

1116889920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20453 (or 20440 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 1116889920 is about 33419.9030519240. The cubic root of 1116889920 is about 1037.5366749507.

The spelling of 1116889920 in words is "one billion, one hundred sixteen million, eight hundred eighty-nine thousand, nine hundred twenty".