8965378997 has 2 divisors, whose sum is σ = 8965378998. Its totient is φ = 8965378996.

The previous prime is 8965378993. The next prime is 8965379053. The reversal of 8965378997 is 7998735698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7154791396 + 1810587601 = 84586^2 + 42551^2 .

It is a cyclic number.

It is not a de Polignac number, because 8965378997 - 2² = 8965378993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8965378997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8965378991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4482689498 + 4482689499.

It is an arithmetic number, because the mean of its divisors is an integer number (4482689499).

Almost surely, 2^8965378997 is an apocalyptic number.

It is an amenable number.

8965378997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8965378997 is an equidigital number, since it uses as much as digits as its factorization.

8965378997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205752960, while the sum is 71.

The square root of 8965378997 is about 94685.6852802999. The cubic root of 8965378997 is about 2077.4131886997.

The spelling of 8965378997 in words is "eight billion, nine hundred sixty-five million, three hundred seventy-eight thousand, nine hundred ninety-seven".