1665132341 has 2 divisors, whose sum is σ = 1665132342. Its totient is φ = 1665132340.

The previous prime is 1665132319. The next prime is 1665132347. The reversal of 1665132341 is 1432315661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120843441 + 544288900 = 33479^2 + 23330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1665132341 - 2⁶ = 1665132277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1665132298 and 1665132307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1665132347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832566170 + 832566171.

It is an arithmetic number, because the mean of its divisors is an integer number (832566171).

Almost surely, 2^1665132341 is an apocalyptic number.

It is an amenable number.

1665132341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665132341 is an equidigital number, since it uses as much as digits as its factorization.

1665132341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 1665132341 is about 40806.0331446221. The cubic root of 1665132341 is about 1185.2671609471.

The spelling of 1665132341 in words is "one billion, six hundred sixty-five million, one hundred thirty-two thousand, three hundred forty-one".