1166631252 has 12 divisors (see below), whose sum is σ = 2722139616. Its totient is φ = 388877080.

The previous prime is 1166631241. The next prime is 1166631253. The reversal of 1166631252 is 2521366611.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1166631252² = 2722056956286175008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166631253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48609624 + ... + 48609647.

It is an arithmetic number, because the mean of its divisors is an integer number (226844968).

Almost surely, 2^1166631252 is an apocalyptic number.

1166631252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1166631252 is an abundant number, since it is smaller than the sum of its proper divisors (1555508364).

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

1166631252 is a wasteful number, since it uses less digits than its factorization.

1166631252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97219278 (or 97219276 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 1166631252 is about 34155.9841316277. The cubic root of 1166631252 is about 1052.7159475126.

Adding to 1166631252 its reverse (2521366611), we get a palindrome (3687997863).

The spelling of 1166631252 in words is "one billion, one hundred sixty-six million, six hundred thirty-one thousand, two hundred fifty-two".