1147971120 has 160 divisors (see below), whose sum is σ = 3634053120. Its totient is φ = 299719680.

The previous prime is 1147971113. The next prime is 1147971131. The reversal of 1147971120 is 211797411.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3621202 + ... + 3621518.

It is an arithmetic number, because the mean of its divisors is an integer number (22712832).

Almost surely, 2^1147971120 is an apocalyptic number.

1147971120 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 1147971120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817026560).

1147971120 is an abundant number, since it is smaller than the sum of its proper divisors (2486082000).

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

1147971120 is a wasteful number, since it uses less digits than its factorization.

1147971120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 33.

The square root of 1147971120 is about 33881.7225063898. The cubic root of 1147971120 is about 1047.0730639966.

The spelling of 1147971120 in words is "one billion, one hundred forty-seven million, nine hundred seventy-one thousand, one hundred twenty".