978041916 has 36 divisors (see below), whose sum is σ = 2473240224. Its totient is φ = 325886400.

The previous prime is 978041863. The next prime is 978041917. The reversal of 978041916 is 619140879.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978041917) 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 11 ways as a sum of consecutive naturals, for example, 150576 + ... + 156936.

Almost surely, 2^978041916 is an apocalyptic number.

It is an amenable number.

978041916 is an abundant number, since it is smaller than the sum of its proper divisors (1495198308).

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

978041916 is a wasteful number, since it uses less digits than its factorization.

978041916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642 (or 10637 counting only the distinct ones).

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

The square root of 978041916 is about 31273.6616979848. The cubic root of 978041916 is about 992.6264023585.

The spelling of 978041916 in words is "nine hundred seventy-eight million, forty-one thousand, nine hundred sixteen".