966001181 has 4 divisors (see below), whose sum is σ = 966115164. Its totient is φ = 965887200.

The previous prime is 966001147. The next prime is 966001187. The reversal of 966001181 is 181100669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 181100669 = 2287 ⋅79187.

It can be written as a sum of positive squares in 2 ways, for example, as 530611225 + 435389956 = 23035^2 + 20866^2 .

It is a cyclic number.

It is not a de Polignac number, because 966001181 - 2¹⁸ = 965739037 is a prime.

It is a super-2 number, since 2×966001181² = 1866316563386789522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966001187) 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, 43160 + ... + 61601.

It is an arithmetic number, because the mean of its divisors is an integer number (241528791).

Almost surely, 2^966001181 is an apocalyptic number.

It is an amenable number.

966001181 is a deficient number, since it is larger than the sum of its proper divisors (113983).

966001181 is a wasteful number, since it uses less digits than its factorization.

966001181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113982.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 966001181 is about 31080.5595348604. The cubic root of 966001181 is about 988.5361424980.

The spelling of 966001181 in words is "nine hundred sixty-six million, one thousand, one hundred eighty-one".