978541313 has 2 divisors, whose sum is σ = 978541314. Its totient is φ = 978541312.

The previous prime is 978541297. The next prime is 978541337. The reversal of 978541313 is 313145879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717007729 + 261533584 = 26777^2 + 16172^2 .

It is a cyclic number.

It is not a de Polignac number, because 978541313 - 2⁴ = 978541297 is a prime.

It is not a weakly prime, because it can be changed into another prime (978541013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489270656 + 489270657.

It is an arithmetic number, because the mean of its divisors is an integer number (489270657).

Almost surely, 2^978541313 is an apocalyptic number.

It is an amenable number.

978541313 is a deficient number, since it is larger than the sum of its proper divisors (1).

978541313 is an equidigital number, since it uses as much as digits as its factorization.

978541313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 978541313 is about 31281.6449855183. The cubic root of 978541313 is about 992.7953216012.

The spelling of 978541313 in words is "nine hundred seventy-eight million, five hundred forty-one thousand, three hundred thirteen".