1165245533 has 2 divisors, whose sum is σ = 1165245534. Its totient is φ = 1165245532.

The previous prime is 1165245503. The next prime is 1165245541. The reversal of 1165245533 is 3355425611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995907364 + 169338169 = 31558^2 + 13013^2 .

It is an emirp because it is prime and its reverse (3355425611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1165245533 - 2⁶ = 1165245469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1165245493 and 1165245502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165245503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582622766 + 582622767.

It is an arithmetic number, because the mean of its divisors is an integer number (582622767).

Almost surely, 2^1165245533 is an apocalyptic number.

It is an amenable number.

1165245533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165245533 is an equidigital number, since it uses as much as digits as its factorization.

1165245533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 35.

The square root of 1165245533 is about 34135.6929474121. The cubic root of 1165245533 is about 1052.2989787284.

The spelling of 1165245533 in words is "one billion, one hundred sixty-five million, two hundred forty-five thousand, five hundred thirty-three".