1208078397 has 6 divisors (see below), whose sum is σ = 1745002142. Its totient is φ = 805385592.

The previous prime is 1208078383. The next prime is 1208078447. The reversal of 1208078397 is 7938708021.

It can be written as a sum of positive squares in only one way, i.e., 1207284516 + 793881 = 34746^2 + 891^2 .

It is not a de Polignac number, because 1208078397 - 2¹¹ = 1208076349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208078297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67115458 + ... + 67115475.

Almost surely, 2^1208078397 is an apocalyptic number.

It is an amenable number.

1208078397 is a deficient number, since it is larger than the sum of its proper divisors (536923745).

1208078397 is a wasteful number, since it uses less digits than its factorization.

1208078397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134230939 (or 134230936 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1208078397 is about 34757.4221857721. The cubic root of 1208078397 is about 1065.0378429983.

The spelling of 1208078397 in words is "one billion, two hundred eight million, seventy-eight thousand, three hundred ninety-seven".