978193 has 4 divisors (see below), whose sum is σ = 981360. Its totient is φ = 975028.

The previous prime is 978181. The next prime is 978203. The reversal of 978193 is 391879.

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 978193 - 2⁹ = 977681 is a prime.

It is a Duffinian number.

978193 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (978113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (245340).

2⁹⁷⁸¹⁹³ is an apocalyptic number.

It is an amenable number.

978193 is a deficient number, since it is larger than the sum of its proper divisors (3167).

978193 is a wasteful number, since it uses less digits than its factorization.

978193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166.

The product of its digits is 13608, while the sum is 37.

The square root of 978193 is about 989.0363997346. The cubic root of 978193 is about 99.2677512045.

The spelling of 978193 in words is "nine hundred seventy-eight thousand, one hundred ninety-three".