1166359021 has 8 divisors (see below), whose sum is σ = 1196866944. Its totient is φ = 1135949280.

The previous prime is 1166358997. The next prime is 1166359027. The reversal of 1166359021 is 1209536611.

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

It is not a de Polignac number, because 1166359021 - 2¹⁵ = 1166326253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166359027) 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, 165 + ... + 48298.

It is an arithmetic number, because the mean of its divisors is an integer number (149608368).

Almost surely, 2^1166359021 is an apocalyptic number.

It is an amenable number.

1166359021 is a deficient number, since it is larger than the sum of its proper divisors (30507923).

1166359021 is an equidigital number, since it uses as much as digits as its factorization.

1166359021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49091.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1166359021 is about 34151.9987848442. The cubic root of 1166359021 is about 1052.6340581099.

The spelling of 1166359021 in words is "one billion, one hundred sixty-six million, three hundred fifty-nine thousand, twenty-one".