978494983146 has 24 divisors (see below), whose sum is σ = 2139522673860. Its totient is φ = 323172654336.

The previous prime is 978494983127. The next prime is 978494983181. The reversal of 978494983146 is 641389494879.

978494983146 is a `hidden beast` number, since 9 + 7 + 8 + 494 + 98 + 3 + 1 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 864258419025 + 114236564121 = 929655^2 + 337989^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249359655 + ... + 249363578.

Almost surely, 2^978494983146 is an apocalyptic number.

978494983146 is an abundant number, since it is smaller than the sum of its proper divisors (1161027690714).

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

978494983146 is a wasteful number, since it uses less digits than its factorization.

978494983146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498723350 (or 498723347 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 72.

The spelling of 978494983146 in words is "nine hundred seventy-eight billion, four hundred ninety-four million, nine hundred eighty-three thousand, one hundred forty-six".