1697041109 has 2 divisors, whose sum is σ = 1697041110. Its totient is φ = 1697041108.

The previous prime is 1697041063. The next prime is 1697041117. The reversal of 1697041109 is 9011407961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056445009 + 640596100 = 32503^2 + 25310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1697041109 - 2²⁰ = 1695992533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1697041309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848520554 + 848520555.

It is an arithmetic number, because the mean of its divisors is an integer number (848520555).

Almost surely, 2^1697041109 is an apocalyptic number.

It is an amenable number.

1697041109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697041109 is an equidigital number, since it uses as much as digits as its factorization.

1697041109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 1697041109 is about 41195.1588053742. The cubic root of 1697041109 is about 1192.7903610489.

The spelling of 1697041109 in words is "one billion, six hundred ninety-seven million, forty-one thousand, one hundred nine".