162989999 has 16 divisors (see below), whose sum is σ = 185107680. Its totient is φ = 142571520.

The previous prime is 162989993. The next prime is 162990017. The reversal of 162989999 is 999989261.

It is not a de Polignac number, because 162989999 - 2¹² = 162985903 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 (162989993) 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 15 ways as a sum of consecutive naturals, for example, 12359 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (11569230).

Almost surely, 2^162989999 is an apocalyptic number.

162989999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

162989999 is a deficient number, since it is larger than the sum of its proper divisors (22117681).

162989999 is a wasteful number, since it uses less digits than its factorization.

162989999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610.

The product of its digits is 5668704, while the sum is 62.

The square root of 162989999 is about 12766.7536594077. The cubic root of 162989999 is about 546.2443849123.

The spelling of 162989999 in words is "one hundred sixty-two million, nine hundred eighty-nine thousand, nine hundred ninety-nine".