1165240913 has 2 divisors, whose sum is σ = 1165240914. Its totient is φ = 1165240912.

The previous prime is 1165240861. The next prime is 1165240919. The reversal of 1165240913 is 3190425611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092104209 + 73136704 = 33047^2 + 8552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165240913 - 2¹² = 1165236817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1165240913.

It is not a weakly prime, because it can be changed into another prime (1165240919) by changing a digit.

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 as a sum of consecutive naturals, namely, 582620456 + 582620457.

It is an arithmetic number, because the mean of its divisors is an integer number (582620457).

Almost surely, 2^1165240913 is an apocalyptic number.

It is an amenable number.

1165240913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165240913 is an equidigital number, since it uses as much as digits as its factorization.

1165240913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1165240913 is about 34135.6252762418. The cubic root of 1165240913 is about 1052.2975879978.

The spelling of 1165240913 in words is "one billion, one hundred sixty-five million, two hundred forty thousand, nine hundred thirteen".