1131499368 has 96 divisors (see below), whose sum is σ = 3264075360. Its totient is φ = 366949440.

The previous prime is 1131499367. The next prime is 1131499403. The reversal of 1131499368 is 8639941311.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1131499367) 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, 64063 + ... + 79793.

It is an arithmetic number, because the mean of its divisors is an integer number (34000785).

Almost surely, 2^1131499368 is an apocalyptic number.

1131499368 is a gapful number since it is divisible by the number (18) 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 1131499368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632037680).

1131499368 is an abundant number, since it is smaller than the sum of its proper divisors (2132575992).

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

1131499368 is a wasteful number, since it uses less digits than its factorization.

1131499368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15789 (or 15773 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 1131499368 is about 33637.7669889070. The cubic root of 1131499368 is about 1042.0409158180.

The spelling of 1131499368 in words is "one billion, one hundred thirty-one million, four hundred ninety-nine thousand, three hundred sixty-eight".