165096391 has 8 divisors (see below), whose sum is σ = 170993520. Its totient is φ = 159212928.

The previous prime is 165096353. The next prime is 165096457. The reversal of 165096391 is 193690561.

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

It is a cyclic number.

It is not a de Polignac number, because 165096391 - 2¹⁷ = 164965319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165096341) 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, 25420 + ... + 31246.

It is an arithmetic number, because the mean of its divisors is an integer number (21374190).

Almost surely, 2^165096391 is an apocalyptic number.

165096391 is a deficient number, since it is larger than the sum of its proper divisors (5897129).

165096391 is an equidigital number, since it uses as much as digits as its factorization.

165096391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 165096391 is about 12848.9840454411. The cubic root of 165096391 is about 548.5874397021.

The spelling of 165096391 in words is "one hundred sixty-five million, ninety-six thousand, three hundred ninety-one".