1010099978 has 16 divisors (see below), whose sum is σ = 1537844616. Its totient is φ = 497502720.

The previous prime is 1010099941. The next prime is 1010099989. The reversal of 1010099978 is 8799900101.

1010099978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 433763929 + 576336049 = 20827^2 + 24007^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124700 + ... + 132552.

Almost surely, 2^1010099978 is an apocalyptic number.

1010099978 is a deficient number, since it is larger than the sum of its proper divisors (527744638).

1010099978 is an equidigital number, since it uses as much as digits as its factorization.

1010099978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 1010099978 is about 31782.0700710322. The cubic root of 1010099978 is about 1003.3553881116.

The spelling of 1010099978 in words is "one billion, ten million, ninety-nine thousand, nine hundred seventy-eight".