1684036897 has 2 divisors, whose sum is σ = 1684036898. Its totient is φ = 1684036896.

The previous prime is 1684036843. The next prime is 1684036909. The reversal of 1684036897 is 7986304861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1556775936 + 127260961 = 39456^2 + 11281^2 .

It is a cyclic number.

It is not a de Polignac number, because 1684036897 - 2⁷ = 1684036769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1684036807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842018448 + 842018449.

It is an arithmetic number, because the mean of its divisors is an integer number (842018449).

Almost surely, 2^1684036897 is an apocalyptic number.

It is an amenable number.

1684036897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684036897 is an equidigital number, since it uses as much as digits as its factorization.

1684036897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1684036897 is about 41037.0186173411. The cubic root of 1684036897 is about 1189.7358114653.

The spelling of 1684036897 in words is "one billion, six hundred eighty-four million, thirty-six thousand, eight hundred ninety-seven".