165219151 has 2 divisors, whose sum is σ = 165219152. Its totient is φ = 165219150.

The previous prime is 165219137. The next prime is 165219157. The reversal of 165219151 is 151912561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165219151 - 2⁹ = 165218639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165219157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82609575 + 82609576.

It is an arithmetic number, because the mean of its divisors is an integer number (82609576).

Almost surely, 2^165219151 is an apocalyptic number.

165219151 is a deficient number, since it is larger than the sum of its proper divisors (1).

165219151 is an equidigital number, since it uses as much as digits as its factorization.

165219151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 31.

The square root of 165219151 is about 12853.7601891431. The cubic root of 165219151 is about 548.7233762679.

The spelling of 165219151 in words is "one hundred sixty-five million, two hundred nineteen thousand, one hundred fifty-one".