1145755165 has 4 divisors (see below), whose sum is σ = 1374906204. Its totient is φ = 916604128.

The previous prime is 1145755153. The next prime is 1145755181. The reversal of 1145755165 is 5615575411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 579172356 + 566582809 = 24066^2 + 23803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145755165 - 2⁹ = 1145754653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114575512 + ... + 114575521.

It is an arithmetic number, because the mean of its divisors is an integer number (343726551).

Almost surely, 2^1145755165 is an apocalyptic number.

It is an amenable number.

1145755165 is a deficient number, since it is larger than the sum of its proper divisors (229151039).

1145755165 is an equidigital number, since it uses as much as digits as its factorization.

1145755165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229151038.

The product of its digits is 105000, while the sum is 40.

The square root of 1145755165 is about 33849.0053768202. The cubic root of 1145755165 is about 1046.3989003035.

The spelling of 1145755165 in words is "one billion, one hundred forty-five million, seven hundred fifty-five thousand, one hundred sixty-five".