1797297097 has 2 divisors, whose sum is σ = 1797297098. Its totient is φ = 1797297096.

The previous prime is 1797297091. The next prime is 1797297133. The reversal of 1797297097 is 7907927971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258546576 + 538750521 = 35476^2 + 23211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1797297097 is a prime.

It is a super-3 number, since 3×1797297097³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1797297091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898648548 + 898648549.

It is an arithmetic number, because the mean of its divisors is an integer number (898648549).

Almost surely, 2^1797297097 is an apocalyptic number.

It is an amenable number.

1797297097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797297097 is an equidigital number, since it uses as much as digits as its factorization.

1797297097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3500658, while the sum is 58.

The square root of 1797297097 is about 42394.5408867698. The cubic root of 1797297097 is about 1215.8312199469.

The spelling of 1797297097 in words is "one billion, seven hundred ninety-seven million, two hundred ninety-seven thousand, ninety-seven".