1166536001 has 4 divisors (see below), whose sum is σ = 1185659604. Its totient is φ = 1147412400.

The previous prime is 1166535943. The next prime is 1166536013. The reversal of 1166536001 is 1006356611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90630400 + 1075905601 = 9520^2 + 32801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166536001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166536051) 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, 9561710 + ... + 9561831.

It is an arithmetic number, because the mean of its divisors is an integer number (296414901).

Almost surely, 2^1166536001 is an apocalyptic number.

It is an amenable number.

1166536001 is a deficient number, since it is larger than the sum of its proper divisors (19123603).

1166536001 is an equidigital number, since it uses as much as digits as its factorization.

1166536001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19123602.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1166536001 is about 34154.5897501346. The cubic root of 1166536001 is about 1052.6872966498.

It can be divided in two parts, 116653 and 6001, that multiplied together give a triangular number (700034653 = T₃₇₄₁₇).

The spelling of 1166536001 in words is "one billion, one hundred sixty-six million, five hundred thirty-six thousand, one".