1197028771 has 2 divisors, whose sum is σ = 1197028772. Its totient is φ = 1197028770.

The previous prime is 1197028741. The next prime is 1197028801. The reversal of 1197028771 is 1778207911.

It is a balanced prime because it is at equal distance from previous prime (1197028741) and next prime (1197028801).

It is an emirp because it is prime and its reverse (1778207911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197028771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1197028741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598514385 + 598514386.

It is an arithmetic number, because the mean of its divisors is an integer number (598514386).

Almost surely, 2^1197028771 is an apocalyptic number.

1197028771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197028771 is an equidigital number, since it uses as much as digits as its factorization.

1197028771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 43.

The square root of 1197028771 is about 34598.1035751961. The cubic root of 1197028771 is about 1061.7807882151.

The spelling of 1197028771 in words is "one billion, one hundred ninety-seven million, twenty-eight thousand, seven hundred seventy-one".