1165216253 has 2 divisors, whose sum is σ = 1165216254. Its totient is φ = 1165216252.

The previous prime is 1165216231. The next prime is 1165216301. The reversal of 1165216253 is 3526125611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1157224324 + 7991929 = 34018^2 + 2827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165216253 - 2²² = 1161021949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165216153) by changing a digit.

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 as a sum of consecutive naturals, namely, 582608126 + 582608127.

It is an arithmetic number, because the mean of its divisors is an integer number (582608127).

Almost surely, 2^1165216253 is an apocalyptic number.

It is an amenable number.

1165216253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165216253 is an equidigital number, since it uses as much as digits as its factorization.

1165216253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 1165216253 is about 34135.2640681158. The cubic root of 1165216253 is about 1052.2901646855.

The spelling of 1165216253 in words is "one billion, one hundred sixty-five million, two hundred sixteen thousand, two hundred fifty-three".