1146209165 has 4 divisors (see below), whose sum is σ = 1375451004. Its totient is φ = 916967328.

The previous prime is 1146209149. The next prime is 1146209191. The reversal of 1146209165 is 5619026411.

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 367910761 + 778298404 = 19181^2 + 27898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146209165 - 2⁴ = 1146209149 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 114620912 + ... + 114620921.

It is an arithmetic number, because the mean of its divisors is an integer number (343862751).

Almost surely, 2^1146209165 is an apocalyptic number.

It is an amenable number.

1146209165 is a deficient number, since it is larger than the sum of its proper divisors (229241839).

1146209165 is an equidigital number, since it uses as much as digits as its factorization.

1146209165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229241838.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1146209165 is about 33855.7109658031. The cubic root of 1146209165 is about 1046.5370922377.

The spelling of 1146209165 in words is "one billion, one hundred forty-six million, two hundred nine thousand, one hundred sixty-five".