1165646341 has 4 divisors (see below), whose sum is σ = 1165747212. Its totient is φ = 1165545472.

The previous prime is 1165646323. The next prime is 1165646357. The reversal of 1165646341 is 1436465611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 178115716 + 987530625 = 13346^2 + 31425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165646341 - 2⁵ = 1165646309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165646341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165644341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30466 + ... + 57091.

It is an arithmetic number, because the mean of its divisors is an integer number (291436803).

Almost surely, 2^1165646341 is an apocalyptic number.

It is an amenable number.

1165646341 is a deficient number, since it is larger than the sum of its proper divisors (100871).

1165646341 is an equidigital number, since it uses as much as digits as its factorization.

1165646341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100870.

The product of its digits is 51840, while the sum is 37.

The square root of 1165646341 is about 34141.5632477483. The cubic root of 1165646341 is about 1052.4196175374.

The spelling of 1165646341 in words is "one billion, one hundred sixty-five million, six hundred forty-six thousand, three hundred forty-one".