1165202065 has 4 divisors (see below), whose sum is σ = 1398242484. Its totient is φ = 932161648.

The previous prime is 1165202063. The next prime is 1165202081. The reversal of 1165202065 is 5602025611.

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 637259536 + 527942529 = 25244^2 + 22977^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165202065 - 2¹ = 1165202063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165202063) 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, 116520202 + ... + 116520211.

It is an arithmetic number, because the mean of its divisors is an integer number (349560621).

Almost surely, 2^1165202065 is an apocalyptic number.

It is an amenable number.

1165202065 is a deficient number, since it is larger than the sum of its proper divisors (233040419).

1165202065 is an equidigital number, since it uses as much as digits as its factorization.

1165202065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233040418.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1165202065 is about 34135.0562472072. The cubic root of 1165202065 is about 1052.2858936748.

Adding to 1165202065 its reverse (5602025611), we get a palindrome (6767227676).

The spelling of 1165202065 in words is "one billion, one hundred sixty-five million, two hundred two thousand, sixty-five".