8100000978 has 8 divisors (see below), whose sum is σ = 16200001968. Its totient is φ = 2700000324.

The previous prime is 8100000967. The next prime is 8100001003. The reversal of 8100000978 is 8790000018.

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

8100000978 is an admirable number.

It is a super-2 number, since 2×8100000978² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675000076 + ... + 675000087.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000246).

Almost surely, 2^8100000978 is an apocalyptic number.

8100000978 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.

8100000978 is a wasteful number, since it uses less digits than its factorization.

8100000978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350000168.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 8100000978 is about 90000.0054333332. The cubic root of 8100000978 is about 2008.2989310743.

The spelling of 8100000978 in words is "eight billion, one hundred million, nine hundred seventy-eight", and thus it is an aban number.