395662513 has 2 divisors, whose sum is σ = 395662514. Its totient is φ = 395662512.

The previous prime is 395662511. The next prime is 395662541. The reversal of 395662513 is 315266593.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395492769 + 169744 = 19887^2 + 412^2 .

It is a cyclic number.

It is not a de Polignac number, because 395662513 - 2¹ = 395662511 is a prime.

Together with 395662511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (395662511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197831256 + 197831257.

It is an arithmetic number, because the mean of its divisors is an integer number (197831257).

Almost surely, 2^395662513 is an apocalyptic number.

It is an amenable number.

395662513 is a deficient number, since it is larger than the sum of its proper divisors (1).

395662513 is an equidigital number, since it uses as much as digits as its factorization.

395662513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 395662513 is about 19891.2672547528. The cubic root of 395662513 is about 734.1333750507.

The spelling of 395662513 in words is "three hundred ninety-five million, six hundred sixty-two thousand, five hundred thirteen".