1010009978 has 16 divisors (see below), whose sum is σ = 1563214464. Its totient is φ = 489160320.

The previous prime is 1010009963. The next prime is 1010009981. The reversal of 1010009978 is 8799000101.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46268 + ... + 64503.

It is an arithmetic number, because the mean of its divisors is an integer number (97700904).

Almost surely, 2^1010009978 is an apocalyptic number.

1010009978 is a deficient number, since it is larger than the sum of its proper divisors (553204486).

1010009978 is a wasteful number, since it uses less digits than its factorization.

1010009978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110917.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1010009978 is about 31780.6541468233. The cubic root of 1010009978 is about 1003.3255875410.

The spelling of 1010009978 in words is "one billion, ten million, nine thousand, nine hundred seventy-eight".