165098489 has 4 divisors (see below), whose sum is σ = 165281424. Its totient is φ = 164915556.

The previous prime is 165098473. The next prime is 165098491. The reversal of 165098489 is 984890561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165098489 - 2⁴ = 165098473 is a prime.

It is a super-2 number, since 2×165098489² = 54515022140166242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165098419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90107 + ... + 91920.

It is an arithmetic number, because the mean of its divisors is an integer number (41320356).

Almost surely, 2^165098489 is an apocalyptic number.

It is an amenable number.

165098489 is a deficient number, since it is larger than the sum of its proper divisors (182935).

165098489 is an equidigital number, since it uses as much as digits as its factorization.

165098489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182934.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 165098489 is about 12849.0656858777. The cubic root of 165098489 is about 548.5897634589.

The spelling of 165098489 in words is "one hundred sixty-five million, ninety-eight thousand, four hundred eighty-nine".