165111513 has 8 divisors (see below), whose sum is σ = 251598528. Its totient is φ = 94349424.

The previous prime is 165111481. The next prime is 165111521. The reversal of 165111513 is 315111561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165111513 - 2⁵ = 165111481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165111523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931206 + ... + 3931247.

It is an arithmetic number, because the mean of its divisors is an integer number (31449816).

Almost surely, 2^165111513 is an apocalyptic number.

It is an amenable number.

165111513 is a deficient number, since it is larger than the sum of its proper divisors (86487015).

165111513 is an equidigital number, since it uses as much as digits as its factorization.

165111513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862463.

The product of its digits is 450, while the sum is 24.

The square root of 165111513 is about 12849.5724831607. The cubic root of 165111513 is about 548.6041884752.

The spelling of 165111513 in words is "one hundred sixty-five million, one hundred eleven thousand, five hundred thirteen".