1163488840 has 64 divisors (see below), whose sum is σ = 2836373760. Its totient is φ = 427822080.

The previous prime is 1163488831. The next prime is 1163488847. The reversal of 1163488840 is 488843611.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (1163488847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9345 + ... + 49135.

It is an arithmetic number, because the mean of its divisors is an integer number (44318340).

Almost surely, 2^1163488840 is an apocalyptic number.

1163488840 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 1163488840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418186880).

1163488840 is an abundant number, since it is smaller than the sum of its proper divisors (1672884920).

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

1163488840 is a wasteful number, since it uses less digits than its factorization.

1163488840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39862 (or 39858 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 1163488840 is about 34109.9522133937. The cubic root of 1163488840 is about 1051.7699068358.

The spelling of 1163488840 in words is "one billion, one hundred sixty-three million, four hundred eighty-eight thousand, eight hundred forty".