162993 has 4 divisors (see below), whose sum is σ = 217328. Its totient is φ = 108660.

The previous prime is 162989. The next prime is 162997. The reversal of 162993 is 399261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 399261 = 3 ⋅133087.

It is an interprime number because it is at equal distance from previous prime (162989) and next prime (162997).

It is not a de Polignac number, because 162993 - 2² = 162989 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 162993.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 162993.

It is not an unprimeable number, because it can be changed into a prime (162997) 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, 27163 + ... + 27168.

It is an arithmetic number, because the mean of its divisors is an integer number (54332).

2¹⁶²⁹⁹³ is an apocalyptic number.

It is an amenable number.

162993 is a deficient number, since it is larger than the sum of its proper divisors (54335).

162993 is an equidigital number, since it uses as much as digits as its factorization.

162993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54334.

The product of its digits is 2916, while the sum is 30.

The square root of 162993 is about 403.7239155661. The cubic root of 162993 is about 54.6247737407.

The spelling of 162993 in words is "one hundred sixty-two thousand, nine hundred ninety-three".