978081183 has 32 divisors (see below), whose sum is σ = 1531001600. Its totient is φ = 615415968.

The previous prime is 978081151. The next prime is 978081211. The reversal of 978081183 is 381180879.

It is not a de Polignac number, because 978081183 - 2⁵ = 978081151 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 (978081113) 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 31 ways as a sum of consecutive naturals, for example, 138660 + ... + 145542.

It is an arithmetic number, because the mean of its divisors is an integer number (47843800).

Almost surely, 2^978081183 is an apocalyptic number.

978081183 is a deficient number, since it is larger than the sum of its proper divisors (552920417).

978081183 is a wasteful number, since it uses less digits than its factorization.

978081183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188 (or 7182 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 978081183 is about 31274.2894883321. The cubic root of 978081183 is about 992.6396863629.

The spelling of 978081183 in words is "nine hundred seventy-eight million, eighty-one thousand, one hundred eighty-three".