1165041101 has 24 divisors (see below), whose sum is σ = 1413570816. Its totient is φ = 956309760.

The previous prime is 1165041083. The next prime is 1165041109. The reversal of 1165041101 is 1011405611.

It is a happy number.

It is not a de Polignac number, because 1165041101 - 2¹⁰ = 1165040077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165041109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143390 + ... + 151296.

It is an arithmetic number, because the mean of its divisors is an integer number (58898784).

Almost surely, 2^1165041101 is an apocalyptic number.

It is an amenable number.

1165041101 is a deficient number, since it is larger than the sum of its proper divisors (248529715).

1165041101 is an equidigital number, since it uses as much as digits as its factorization.

1165041101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8049 (or 8042 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 1165041101 is about 34132.6984136912. The cubic root of 1165041101 is about 1052.2374362865.

Adding to 1165041101 its reverse (1011405611), we get a palindrome (2176446712).

The spelling of 1165041101 in words is "one billion, one hundred sixty-five million, forty-one thousand, one hundred one".