2065643357 has 2 divisors, whose sum is σ = 2065643358. Its totient is φ = 2065643356.

The previous prime is 2065643351. The next prime is 2065643431. The reversal of 2065643357 is 7533465602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2042497636 + 23145721 = 45194^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2065643357 - 2⁸ = 2065643101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2065643351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032821678 + 1032821679.

It is an arithmetic number, because the mean of its divisors is an integer number (1032821679).

Almost surely, 2^2065643357 is an apocalyptic number.

It is an amenable number.

2065643357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065643357 is an equidigital number, since it uses as much as digits as its factorization.

2065643357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 41.

The square root of 2065643357 is about 45449.3493572790. The cubic root of 2065643357 is about 1273.5571748982.

The spelling of 2065643357 in words is "two billion, sixty-five million, six hundred forty-three thousand, three hundred fifty-seven".