978490116 has 18 divisors (see below), whose sum is σ = 2473405662. Its totient is φ = 326163360.

The previous prime is 978490111. The next prime is 978490151. The reversal of 978490116 is 611094879.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 734193216 + 244296900 = 27096^2 + 15630^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (978490111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13590105 + ... + 13590176.

Almost surely, 2^978490116 is an apocalyptic number.

It is an amenable number.

978490116 is an abundant number, since it is smaller than the sum of its proper divisors (1494915546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978490116 is a wasteful number, since it uses less digits than its factorization.

978490116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27180291 (or 27180286 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 978490116 is about 31280.8266514809. The cubic root of 978490116 is about 992.7780070440.

The spelling of 978490116 in words is "nine hundred seventy-eight million, four hundred ninety thousand, one hundred sixteen".