1187400000 has 168 divisors, whose sum is σ = 3928811040. Its totient is φ = 316480000.

The previous prime is 1187399987. The next prime is 1187400007. The reversal of 1187400000 is 47811.

It is a self number, because there is not a number n which added to its sum of digits gives 1187400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187400007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599011 + ... + 600989.

It is an arithmetic number, because the mean of its divisors is an integer number (23385780).

Almost surely, 2^1187400000 is an apocalyptic number.

1187400000 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 1187400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964405520).

1187400000 is an abundant number, since it is smaller than the sum of its proper divisors (2741411040).

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

1187400000 is an frugal number, since it uses more digits than its factorization.

1187400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1187400000 is about 34458.6708971777. The cubic root of 1187400000 is about 1058.9261701515.

Adding to 1187400000 its reverse (47811), we get a palindrome (1187447811).

The spelling of 1187400000 in words is "one billion, one hundred eighty-seven million, four hundred thousand".