1181446560 has 336 divisors, whose sum is σ = 4785975936. Its totient is φ = 269858304.

The previous prime is 1181446559. The next prime is 1181446561. The reversal of 1181446560 is 656441811.

1181446560 is a `hidden beast` number, since 11 + 81 + 4 + 4 + 6 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (1181446559) and next prime (1181446561).

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1181446561) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 815757 + ... + 817203.

It is an arithmetic number, because the mean of its divisors is an integer number (14243976).

Almost surely, 2^1181446560 is an apocalyptic number.

1181446560 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 1181446560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2392987968).

1181446560 is an abundant number, since it is smaller than the sum of its proper divisors (3604529376).

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

1181446560 is an equidigital number, since it uses as much as digits as its factorization.

1181446560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1181446560 is about 34372.1771204560. The cubic root of 1181446560 is about 1057.1534400833.

The spelling of 1181446560 in words is "one billion, one hundred eighty-one million, four hundred forty-six thousand, five hundred sixty".