165918848419 has 8 divisors (see below), whose sum is σ = 168284176128. Its totient is φ = 163554310920.

The previous prime is 165918848413. The next prime is 165918848443. The reversal of 165918848419 is 914848819561.

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 165918848419 - 2²³ = 165910459811 is a prime.

It is a super-2 number, since 2×165918848419² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165918848413) 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, 231984 + ... + 621010.

It is an arithmetic number, because the mean of its divisors is an integer number (21035522016).

Almost surely, 2^165918848419 is an apocalyptic number.

165918848419 is a deficient number, since it is larger than the sum of its proper divisors (2365327709).

165918848419 is an equidigital number, since it uses as much as digits as its factorization.

165918848419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395105.

The product of its digits is 19906560, while the sum is 64.

The spelling of 165918848419 in words is "one hundred sixty-five billion, nine hundred eighteen million, eight hundred forty-eight thousand, four hundred nineteen".