165219493 has 8 divisors (see below), whose sum is σ = 166275648. Its totient is φ = 164167104.

The previous prime is 165219479. The next prime is 165219499. The reversal of 165219493 is 394912561.

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 165219493 - 2¹³ = 165211301 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 (165219499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168621 + ... + 169597.

It is an arithmetic number, because the mean of its divisors is an integer number (20784456).

Almost surely, 2^165219493 is an apocalyptic number.

It is an amenable number.

165219493 is a deficient number, since it is larger than the sum of its proper divisors (1056155).

165219493 is an equidigital number, since it uses as much as digits as its factorization.

165219493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883.

The product of its digits is 58320, while the sum is 40.

The square root of 165219493 is about 12853.7734926363. The cubic root of 165219493 is about 548.7237548828.

The spelling of 165219493 in words is "one hundred sixty-five million, two hundred nineteen thousand, four hundred ninety-three".