165536387 has 2 divisors, whose sum is σ = 165536388. Its totient is φ = 165536386.

The previous prime is 165536323. The next prime is 165536407. The reversal of 165536387 is 783635561.

It is a strong prime.

It is an emirp because it is prime and its reverse (783635561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165536387 - 2⁶ = 165536323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165536087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82768193 + 82768194.

It is an arithmetic number, because the mean of its divisors is an integer number (82768194).

Almost surely, 2^165536387 is an apocalyptic number.

165536387 is a deficient number, since it is larger than the sum of its proper divisors (1).

165536387 is an equidigital number, since it uses as much as digits as its factorization.

165536387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 165536387 is about 12866.0944734601. The cubic root of 165536387 is about 549.0743515502.

The spelling of 165536387 in words is "one hundred sixty-five million, five hundred thirty-six thousand, three hundred eighty-seven".