1116421888 has 36 divisors (see below), whose sum is σ = 2251506880. Its totient is φ = 552443904.

The previous prime is 1116421861. The next prime is 1116421907. The reversal of 1116421888 is 8881246111.

It is a self number, because there is not a number n which added to its sum of digits gives 1116421888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353 + ... + 47311.

Almost surely, 2^1116421888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1116421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125753440).

1116421888 is an abundant number, since it is smaller than the sum of its proper divisors (1135084992).

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

1116421888 is an frugal number, since it uses more digits than its factorization.

1116421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45072 (or 45058 counting only the distinct ones).

The product of its digits is 24576, while the sum is 40.

The square root of 1116421888 is about 33412.9000237932. The cubic root of 1116421888 is about 1037.3917283443.

Adding to 1116421888 its reverse (8881246111), we get a palindrome (9997667999).

The spelling of 1116421888 in words is "one billion, one hundred sixteen million, four hundred twenty-one thousand, eight hundred eighty-eight".