1205169965 has 16 divisors (see below), whose sum is σ = 1497761280. Its totient is φ = 929839680.

The previous prime is 1205169913. The next prime is 1205169983. The reversal of 1205169965 is 5699615021.

It is not a de Polignac number, because 1205169965 - 2¹⁴ = 1205153581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139502 + ... + 147888.

It is an arithmetic number, because the mean of its divisors is an integer number (93610080).

Almost surely, 2^1205169965 is an apocalyptic number.

It is an amenable number.

1205169965 is a deficient number, since it is larger than the sum of its proper divisors (292591315).

1205169965 is an equidigital number, since it uses as much as digits as its factorization.

1205169965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9412.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 1205169965 is about 34715.5579675741. The cubic root of 1205169965 is about 1064.1824682469.

The spelling of 1205169965 in words is "one billion, two hundred five million, one hundred sixty-nine thousand, nine hundred sixty-five".