978156484 has 6 divisors (see below), whose sum is σ = 1711773854. Its totient is φ = 489078240.

The previous prime is 978156481. The next prime is 978156497. The reversal of 978156484 is 484651879.

It can be written as a sum of positive squares in only one way, i.e., 937706884 + 40449600 = 30622^2 + 6360^2 .

It is not an unprimeable number, because it can be changed into a prime (978156481) 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 as a sum of consecutive naturals, namely, 122269557 + ... + 122269564.

Almost surely, 2^978156484 is an apocalyptic number.

It is an amenable number.

978156484 is a deficient number, since it is larger than the sum of its proper divisors (733617370).

978156484 is a wasteful number, since it uses less digits than its factorization.

978156484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244539125 (or 244539123 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 978156484 is about 31275.4933454294. The cubic root of 978156484 is about 992.6651596550.

The spelling of 978156484 in words is "nine hundred seventy-eight million, one hundred fifty-six thousand, four hundred eighty-four".