971258978 has 8 divisors (see below), whose sum is σ = 1457028972. Its totient is φ = 485582656.

The previous prime is 971258971. The next prime is 971258983. The reversal of 971258978 is 879852179.

971258978 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 2 ways, for example, as 671172649 + 300086329 = 25907^2 + 17323^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (971258971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15326 + ... + 46662.

Almost surely, 2^971258978 is an apocalyptic number.

971258978 is a deficient number, since it is larger than the sum of its proper divisors (485769994).

971258978 is a wasteful number, since it uses less digits than its factorization.

971258978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46836.

The product of its digits is 2540160, while the sum is 56.

The square root of 971258978 is about 31165.0281244859. The cubic root of 971258978 is about 990.3263822008.

The spelling of 971258978 in words is "nine hundred seventy-one million, two hundred fifty-eight thousand, nine hundred seventy-eight".