1166233521 has 8 divisors (see below), whose sum is σ = 1608598080. Its totient is φ = 750678992.

The previous prime is 1166233493. The next prime is 1166233529. The reversal of 1166233521 is 1253326611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166233521 - 2⁵ = 1166233489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1166233529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6702405 + ... + 6702578.

It is an arithmetic number, because the mean of its divisors is an integer number (201074760).

Almost surely, 2^1166233521 is an apocalyptic number.

It is an amenable number.

1166233521 is a deficient number, since it is larger than the sum of its proper divisors (442364559).

1166233521 is a wasteful number, since it uses less digits than its factorization.

1166233521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13405015.

The product of its digits is 6480, while the sum is 30.

The square root of 1166233521 is about 34150.1613612586. The cubic root of 1166233521 is about 1052.5963023502.

The spelling of 1166233521 in words is "one billion, one hundred sixty-six million, two hundred thirty-three thousand, five hundred twenty-one".