2978313697 has 2 divisors, whose sum is σ = 2978313698. Its totient is φ = 2978313696.

The previous prime is 2978313683. The next prime is 2978313713. The reversal of 2978313697 is 7963138792.

It is a happy number.

2978313697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2660083776 + 318229921 = 51576^2 + 17839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978313697 - 2¹¹ = 2978311649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2978313617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489156848 + 1489156849.

It is an arithmetic number, because the mean of its divisors is an integer number (1489156849).

Almost surely, 2^2978313697 is an apocalyptic number.

It is an amenable number.

2978313697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978313697 is an equidigital number, since it uses as much as digits as its factorization.

2978313697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 2978313697 is about 54573.9287297515. The cubic root of 2978313697 is about 1438.7659336204.

The spelling of 2978313697 in words is "two billion, nine hundred seventy-eight million, three hundred thirteen thousand, six hundred ninety-seven".