165013187 has 2 divisors, whose sum is σ = 165013188. Its totient is φ = 165013186.

The previous prime is 165013171. The next prime is 165013207. The reversal of 165013187 is 781310561.

It is a weak prime.

It is an emirp because it is prime and its reverse (781310561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165013187 - 2⁴ = 165013171 is a prime.

It is not a weakly prime, because it can be changed into another prime (165013117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82506593 + 82506594.

It is an arithmetic number, because the mean of its divisors is an integer number (82506594).

Almost surely, 2^165013187 is an apocalyptic number.

165013187 is a deficient number, since it is larger than the sum of its proper divisors (1).

165013187 is an equidigital number, since it uses as much as digits as its factorization.

165013187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 165013187 is about 12845.7458716884. The cubic root of 165013187 is about 548.4952666003.

The spelling of 165013187 in words is "one hundred sixty-five million, thirteen thousand, one hundred eighty-seven".