978331543 has 4 divisors (see below), whose sum is σ = 1118093200. Its totient is φ = 838569888.

The previous prime is 978331531. The next prime is 978331579. The reversal of 978331543 is 345133879.

It is a happy number.

978331543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978331543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 978331543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978332543) 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, 69880818 + ... + 69880831.

It is an arithmetic number, because the mean of its divisors is an integer number (279523300).

Almost surely, 2^978331543 is an apocalyptic number.

978331543 is a deficient number, since it is larger than the sum of its proper divisors (139761657).

978331543 is a wasteful number, since it uses less digits than its factorization.

978331543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139761656.

The product of its digits is 272160, while the sum is 43.

The square root of 978331543 is about 31278.2918811114. The cubic root of 978331543 is about 992.7243746536.

The spelling of 978331543 in words is "nine hundred seventy-eight million, three hundred thirty-one thousand, five hundred forty-three".