1197893897 has 2 divisors, whose sum is σ = 1197893898. Its totient is φ = 1197893896.

The previous prime is 1197893869. The next prime is 1197893927. The reversal of 1197893897 is 7983987911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966215056 + 231678841 = 31084^2 + 15221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197893897 - 2²² = 1193699593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1197893857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598946948 + 598946949.

It is an arithmetic number, because the mean of its divisors is an integer number (598946949).

Almost surely, 2^1197893897 is an apocalyptic number.

It is an amenable number.

1197893897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197893897 is an equidigital number, since it uses as much as digits as its factorization.

1197893897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 62.

The square root of 1197893897 is about 34610.6038231060. The cubic root of 1197893897 is about 1062.0365194569.

The spelling of 1197893897 in words is "one billion, one hundred ninety-seven million, eight hundred ninety-three thousand, eight hundred ninety-seven".