1697361541 has 2 divisors, whose sum is σ = 1697361542. Its totient is φ = 1697361540.

The previous prime is 1697361499. The next prime is 1697361551. The reversal of 1697361541 is 1451637961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1628122500 + 69239041 = 40350^2 + 8321^2 .

It is a cyclic number.

It is not a de Polignac number, because 1697361541 - 2¹¹ = 1697359493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1697361551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848680770 + 848680771.

It is an arithmetic number, because the mean of its divisors is an integer number (848680771).

Almost surely, 2^1697361541 is an apocalyptic number.

It is an amenable number.

1697361541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697361541 is an equidigital number, since it uses as much as digits as its factorization.

1697361541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 1697361541 is about 41199.0478166668. The cubic root of 1697361541 is about 1192.8654297760.

The spelling of 1697361541 in words is "one billion, six hundred ninety-seven million, three hundred sixty-one thousand, five hundred forty-one".