162008489 has 4 divisors (see below), whose sum is σ = 162166356. Its totient is φ = 161850624.

The previous prime is 162008461. The next prime is 162008491. The reversal of 162008489 is 984800261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103225600 + 58782889 = 10160^2 + 7667^2 .

It is a cyclic number.

It is not a de Polignac number, because 162008489 - 2⁸ = 162008233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162005489) 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, 77384 + ... + 79449.

It is an arithmetic number, because the mean of its divisors is an integer number (40541589).

Almost surely, 2^162008489 is an apocalyptic number.

It is an amenable number.

162008489 is a deficient number, since it is larger than the sum of its proper divisors (157867).

162008489 is a wasteful number, since it uses less digits than its factorization.

162008489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157866.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 162008489 is about 12728.2555364040. The cubic root of 162008489 is about 545.1456996196.

The spelling of 162008489 in words is "one hundred sixty-two million, eight thousand, four hundred eighty-nine".