9850920978 has 8 divisors (see below), whose sum is σ = 19701841968. Its totient is φ = 3283640324.

The previous prime is 9850920931. The next prime is 9850921001. The reversal of 9850920978 is 8790290589.

It is a sphenic number, since it is the product of 3 distinct primes.

9850920978 is an admirable number.

It is a super-2 number, since 2×9850920978² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820910076 + ... + 820910087.

It is an arithmetic number, because the mean of its divisors is an integer number (2462730246).

Almost surely, 2^9850920978 is an apocalyptic number.

9850920978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9850920978 is a wasteful number, since it uses less digits than its factorization.

9850920978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641820168.

The product of its (nonzero) digits is 3265920, while the sum is 57.

The square root of 9850920978 is about 99251.8059180789. The cubic root of 9850920978 is about 2143.6750095934.

The spelling of 9850920978 in words is "nine billion, eight hundred fifty million, nine hundred twenty thousand, nine hundred seventy-eight".