1166521652 has 6 divisors (see below), whose sum is σ = 2041412898. Its totient is φ = 583260824.

The previous prime is 1166521639. The next prime is 1166521669. The reversal of 1166521652 is 2561256611.

It can be written as a sum of positive squares in only one way, i.e., 1097199376 + 69322276 = 33124^2 + 8326^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145815203 + ... + 145815210.

It is an arithmetic number, because the mean of its divisors is an integer number (340235483).

Almost surely, 2^1166521652 is an apocalyptic number.

It is an amenable number.

1166521652 is a deficient number, since it is larger than the sum of its proper divisors (874891246).

1166521652 is a wasteful number, since it uses less digits than its factorization.

1166521652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291630417 (or 291630415 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 1166521652 is about 34154.3796898729. The cubic root of 1166521652 is about 1052.6829804315.

The spelling of 1166521652 in words is "one billion, one hundred sixty-six million, five hundred twenty-one thousand, six hundred fifty-two".