1115800000 has 168 divisors, whose sum is σ = 3166859808. Its totient is φ = 382080000.

The previous prime is 1115799961. The next prime is 1115800001. The reversal of 1115800000 is 85111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115800001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1399602 + ... + 1400398.

It is an arithmetic number, because the mean of its divisors is an integer number (18850356).

Almost surely, 2^1115800000 is an apocalyptic number.

1115800000 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 1115800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583429904).

1115800000 is an abundant number, since it is smaller than the sum of its proper divisors (2051059808).

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

1115800000 is an frugal number, since it uses more digits than its factorization.

1115800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1115800000 is about 33403.5926211538. The cubic root of 1115800000 is about 1037.1990708013.

Adding to 1115800000 its reverse (85111), we get a palindrome (1115885111).

The spelling of 1115800000 in words is "one billion, one hundred fifteen million, eight hundred thousand".