1166551530 has 16 divisors (see below), whose sum is σ = 2799723744. Its totient is φ = 311080400.

The previous prime is 1166551517. The next prime is 1166551541. The reversal of 1166551530 is 351556611.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1166551491 and 1166551500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19442496 + ... + 19442555.

It is an arithmetic number, because the mean of its divisors is an integer number (174982734).

Almost surely, 2^1166551530 is an apocalyptic number.

1166551530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166551530 is an abundant number, since it is smaller than the sum of its proper divisors (1633172214).

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

1166551530 is a wasteful number, since it uses less digits than its factorization.

1166551530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38885061.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1166551530 is about 34154.8170833925. The cubic root of 1166551530 is about 1052.6919677754.

The spelling of 1166551530 in words is "one billion, one hundred sixty-six million, five hundred fifty-one thousand, five hundred thirty".