1153522944 has 252 divisors, whose sum is σ = 3949874656. Its totient is φ = 329204736.

The previous prime is 1153522921. The next prime is 1153522949. The reversal of 1153522944 is 4492253511.

1153522944 is a `hidden beast` number, since 1 + 15 + 352 + 294 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

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

It is a junction number, because it is equal to n+sod(n) for n = 1153522899 and 1153522908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153522949) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1305927 + ... + 1306809.

Almost surely, 2^1153522944 is an apocalyptic number.

1153522944 is a gapful number since it is divisible by the number (14) 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 1153522944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974937328).

1153522944 is an abundant number, since it is smaller than the sum of its proper divisors (2796351712).

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

1153522944 is an frugal number, since it uses more digits than its factorization.

1153522944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 895 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1153522944 is about 33963.5531710097. The cubic root of 1153522944 is about 1048.7583036170.

The spelling of 1153522944 in words is "one billion, one hundred fifty-three million, five hundred twenty-two thousand, nine hundred forty-four".