1163021952 has 128 divisors (see below), whose sum is σ = 3294077760. Its totient is φ = 362299392.

The previous prime is 1163021929. The next prime is 1163021987. The reversal of 1163021952 is 2591203611.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063518 + ... + 1064610.

Almost surely, 2^1163021952 is an apocalyptic number.

1163021952 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 1163021952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647038880).

1163021952 is an abundant number, since it is smaller than the sum of its proper divisors (2131055808).

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

1163021952 is a wasteful number, since it uses less digits than its factorization.

1163021952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1163021952 is about 34103.1076589803. The cubic root of 1163021952 is about 1051.6292023069.

The spelling of 1163021952 in words is "one billion, one hundred sixty-three million, twenty-one thousand, nine hundred fifty-two".