1131165952 has 72 divisors (see below), whose sum is σ = 2616123776. Its totient is φ = 478089216.

The previous prime is 1131165947. The next prime is 1131165979. The reversal of 1131165952 is 2595611311.

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 7 ways as a sum of consecutive naturals, for example, 126493 + ... + 135139.

Almost surely, 2^1131165952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131165952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308061888).

1131165952 is an abundant number, since it is smaller than the sum of its proper divisors (1484957824).

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

1131165952 is an frugal number, since it uses more digits than its factorization.

1131165952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8743 (or 8729 counting only the distinct ones).

The product of its digits is 8100, while the sum is 34.

The square root of 1131165952 is about 33632.8106467479. The cubic root of 1131165952 is about 1041.9385539269.

The spelling of 1131165952 in words is "one billion, one hundred thirty-one million, one hundred sixty-five thousand, nine hundred fifty-two".