1155984480 has 576 divisors, whose sum is σ = 4853882880. Its totient is φ = 256048128.

The previous prime is 1155984407. The next prime is 1155984481. The reversal of 1155984480 is 844895511.

It is a happy number.

1155984480 is a `hidden beast` number, since 1 + 15 + 598 + 4 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155984481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9102177 + ... + 9102303.

It is an arithmetic number, because the mean of its divisors is an integer number (8426880).

Almost surely, 2^1155984480 is an apocalyptic number.

1155984480 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 1155984480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2426941440).

1155984480 is an abundant number, since it is smaller than the sum of its proper divisors (3697898400).

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

1155984480 is a wasteful number, since it uses less digits than its factorization.

1155984480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 1155984480 is about 33999.7717639398. The cubic root of 1155984480 is about 1049.5037655144.

The spelling of 1155984480 in words is "one billion, one hundred fifty-five million, nine hundred eighty-four thousand, four hundred eighty".