1155668832 has 72 divisors (see below), whose sum is σ = 3291593760. Its totient is φ = 384618240.

The previous prime is 1155668807. The next prime is 1155668867. The reversal of 1155668832 is 2388665511.

1155668832 is a `hidden beast` number, since 1 + 1 + 5 + 566 + 8 + 83 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204282 + ... + 209862.

It is an arithmetic number, because the mean of its divisors is an integer number (45716580).

Almost surely, 2^1155668832 is an apocalyptic number.

1155668832 is a gapful number since it is divisible by the number (12) 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 1155668832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1645796880).

1155668832 is an abundant number, since it is smaller than the sum of its proper divisors (2135924928).

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

1155668832 is a wasteful number, since it uses less digits than its factorization.

1155668832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316 (or 6305 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 1155668832 is about 33995.1295335082. The cubic root of 1155668832 is about 1049.4082325360.

The spelling of 1155668832 in words is "one billion, one hundred fifty-five million, six hundred sixty-eight thousand, eight hundred thirty-two".