2079278197 has 2 divisors, whose sum is σ = 2079278198. Its totient is φ = 2079278196.

The previous prime is 2079278191. The next prime is 2079278207. The reversal of 2079278197 is 7918729702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1700820081 + 378458116 = 41241^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2079278197 - 2¹⁹ = 2078753909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2079278191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039639098 + 1039639099.

It is an arithmetic number, because the mean of its divisors is an integer number (1039639099).

Almost surely, 2^2079278197 is an apocalyptic number.

It is an amenable number.

2079278197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2079278197 is an equidigital number, since it uses as much as digits as its factorization.

2079278197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 2079278197 is about 45599.1030284588. The cubic root of 2079278197 is about 1276.3531852928.

It can be divided in two parts, 20792 and 78197, that added together give a palindrome (98989).

The spelling of 2079278197 in words is "two billion, seventy-nine million, two hundred seventy-eight thousand, one hundred ninety-seven".