165995193 has 32 divisors (see below), whose sum is σ = 277984000. Its totient is φ = 87550848.

The previous prime is 165995147. The next prime is 165995197. The reversal of 165995193 is 391599561.

It is not a de Polignac number, because 165995193 - 2⁶ = 165995129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165995197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7173 + ... + 19581.

It is an arithmetic number, because the mean of its divisors is an integer number (8687000).

Almost surely, 2^165995193 is an apocalyptic number.

165995193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

165995193 is a deficient number, since it is larger than the sum of its proper divisors (111988807).

165995193 is a wasteful number, since it uses less digits than its factorization.

165995193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12446 (or 12432 counting only the distinct ones).

The product of its digits is 328050, while the sum is 48.

The square root of 165995193 is about 12883.9121775957. The cubic root of 165995193 is about 549.5811610142.

The spelling of 165995193 in words is "one hundred sixty-five million, nine hundred ninety-five thousand, one hundred ninety-three".