165889045 has 8 divisors (see below), whose sum is σ = 227505024. Its totient is φ = 113752464.

The previous prime is 165889037. The next prime is 165889049. The reversal of 165889045 is 540988561.

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

It is not a de Polignac number, because 165889045 - 2³ = 165889037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165888986 and 165889004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165889049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369809 + ... + 2369878.

It is an arithmetic number, because the mean of its divisors is an integer number (28438128).

Almost surely, 2^165889045 is an apocalyptic number.

It is an amenable number.

165889045 is a deficient number, since it is larger than the sum of its proper divisors (61615979).

165889045 is an equidigital number, since it uses as much as digits as its factorization.

165889045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4739699.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 165889045 is about 12879.7921178876. The cubic root of 165889045 is about 549.4639901909.

The spelling of 165889045 in words is "one hundred sixty-five million, eight hundred eighty-nine thousand, forty-five".