1165438801 has 16 divisors (see below), whose sum is σ = 1201495680. Its totient is φ = 1130088960.

The previous prime is 1165438763. The next prime is 1165438843. The reversal of 1165438801 is 1088345611.

It is a cyclic number.

It is not a de Polignac number, because 1165438801 - 2⁹ = 1165438289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165438871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356310 + ... + 1357168.

It is an arithmetic number, because the mean of its divisors is an integer number (75093480).

Almost surely, 2^1165438801 is an apocalyptic number.

It is an amenable number.

1165438801 is a deficient number, since it is larger than the sum of its proper divisors (36056879).

1165438801 is an equidigital number, since it uses as much as digits as its factorization.

1165438801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 1165438801 is about 34138.5237085613. The cubic root of 1165438801 is about 1052.3571537282.

The spelling of 1165438801 in words is "one billion, one hundred sixty-five million, four hundred thirty-eight thousand, eight hundred one".