1181017697 has 2 divisors, whose sum is σ = 1181017698. Its totient is φ = 1181017696.

The previous prime is 1181017619. The next prime is 1181017703. The reversal of 1181017697 is 7967101811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 878292496 + 302725201 = 29636^2 + 17399^2 .

It is an emirp because it is prime and its reverse (7967101811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1181017697 - 2¹⁴ = 1181001313 is a prime.

It is a super-3 number, since 3×1181017697³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1181017297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590508848 + 590508849.

It is an arithmetic number, because the mean of its divisors is an integer number (590508849).

Almost surely, 2^1181017697 is an apocalyptic number.

It is an amenable number.

1181017697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181017697 is an equidigital number, since it uses as much as digits as its factorization.

1181017697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 41.

The square root of 1181017697 is about 34365.9380346296. The cubic root of 1181017697 is about 1057.0255096630.

The spelling of 1181017697 in words is "one billion, one hundred eighty-one million, seventeen thousand, six hundred ninety-seven".