162872993 has 4 divisors (see below), whose sum is σ = 163393668. Its totient is φ = 162352320.

The previous prime is 162872947. The next prime is 162872999. The reversal of 162872993 is 399278261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399278261 = 1999 ⋅199739.

It can be written as a sum of positive squares in 2 ways, for example, as 19998784 + 142874209 = 4472^2 + 11953^2 .

It is a cyclic number.

It is not a de Polignac number, because 162872993 - 2⁸ = 162872737 is a prime.

It is a super-2 number, since 2×162872993² = 53055223697556098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162872999) 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, 259868 + ... + 260493.

It is an arithmetic number, because the mean of its divisors is an integer number (40848417).

Almost surely, 2^162872993 is an apocalyptic number.

It is an amenable number.

162872993 is a deficient number, since it is larger than the sum of its proper divisors (520675).

162872993 is an equidigital number, since it uses as much as digits as its factorization.

162872993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520674.

The product of its digits is 326592, while the sum is 47.

The square root of 162872993 is about 12762.1703875164. The cubic root of 162872993 is about 546.1136423902.

The spelling of 162872993 in words is "one hundred sixty-two million, eight hundred seventy-two thousand, nine hundred ninety-three".