1205270197 has 2 divisors, whose sum is σ = 1205270198. Its totient is φ = 1205270196.

The previous prime is 1205270167. The next prime is 1205270207. The reversal of 1205270197 is 7910725021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004509636 + 200760561 = 31694^2 + 14169^2 .

It is an emirp because it is prime and its reverse (7910725021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1205270197 - 2²³ = 1196881589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205270107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602635098 + 602635099.

It is an arithmetic number, because the mean of its divisors is an integer number (602635099).

Almost surely, 2^1205270197 is an apocalyptic number.

It is an amenable number.

1205270197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205270197 is an equidigital number, since it uses as much as digits as its factorization.

1205270197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 1205270197 is about 34717.0015554339. The cubic root of 1205270197 is about 1064.2119695298.

The spelling of 1205270197 in words is "one billion, two hundred five million, two hundred seventy thousand, one hundred ninety-seven".