1118250000 has 420 divisors, whose sum is σ = 4533691968. Its totient is φ = 252000000.

The previous prime is 1118249981. The next prime is 1118250013. The reversal of 1118250000 is 528111.

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 15749965 + ... + 15750035.

Almost surely, 2^1118250000 is an apocalyptic number.

1118250000 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 1118250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2266845984).

1118250000 is an abundant number, since it is smaller than the sum of its proper divisors (3415441968).

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

1118250000 is an frugal number, since it uses more digits than its factorization.

1118250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1118250000 is about 33440.2452144119. The cubic root of 1118250000 is about 1037.9576536123.

Adding to 1118250000 its reverse (528111), we get a palindrome (1118778111).

The spelling of 1118250000 in words is "one billion, one hundred eighteen million, two hundred fifty thousand".