1165440923 has 2 divisors, whose sum is σ = 1165440924. Its totient is φ = 1165440922.

The previous prime is 1165440907. The next prime is 1165440937. The reversal of 1165440923 is 3290445611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1165440923 - 2⁴ = 1165440907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1165440323) 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, 582720461 + 582720462.

It is an arithmetic number, because the mean of its divisors is an integer number (582720462).

Almost surely, 2^1165440923 is an apocalyptic number.

1165440923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165440923 is an equidigital number, since it uses as much as digits as its factorization.

1165440923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1165440923 is about 34138.5547878055. The cubic root of 1165440923 is about 1052.3577924291.

The spelling of 1165440923 in words is "one billion, one hundred sixty-five million, four hundred forty thousand, nine hundred twenty-three".