1170219997 has 2 divisors, whose sum is σ = 1170219998. Its totient is φ = 1170219996.

The previous prime is 1170219907. The next prime is 1170220021. The reversal of 1170219997 is 7999120711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073610756 + 96609241 = 32766^2 + 9829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170219997 - 2¹¹ = 1170217949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1170219907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585109998 + 585109999.

It is an arithmetic number, because the mean of its divisors is an integer number (585109999).

Almost surely, 2^1170219997 is an apocalyptic number.

It is an amenable number.

1170219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170219997 is an equidigital number, since it uses as much as digits as its factorization.

1170219997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 46.

The square root of 1170219997 is about 34208.4784373699. The cubic root of 1170219997 is about 1053.7942836348.

The spelling of 1170219997 in words is "one billion, one hundred seventy million, two hundred nineteen thousand, nine hundred ninety-seven".