1165144101 has 32 divisors (see below), whose sum is σ = 1719042048. Its totient is φ = 696104640.

The previous prime is 1165144069. The next prime is 1165144117. The reversal of 1165144101 is 1014415611.

It is not a de Polignac number, because 1165144101 - 2⁵ = 1165144069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165143101) 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 in 31 ways as a sum of consecutive naturals, for example, 724240 + ... + 725846.

It is an arithmetic number, because the mean of its divisors is an integer number (53720064).

Almost surely, 2^1165144101 is an apocalyptic number.

1165144101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1165144101 is a deficient number, since it is larger than the sum of its proper divisors (553897947).

1165144101 is a wasteful number, since it uses less digits than its factorization.

1165144101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1165144101 is about 34134.2071974727. The cubic root of 1165144101 is about 1052.2684444235.

Adding to 1165144101 its reverse (1014415611), we get a palindrome (2179559712).

The spelling of 1165144101 in words is "one billion, one hundred sixty-five million, one hundred forty-four thousand, one hundred one".