1683691497 has 6 divisors (see below), whose sum is σ = 2431998842. Its totient is φ = 1122460992.

The previous prime is 1683691487. The next prime is 1683691501. The reversal of 1683691497 is 7941963861.

1683691497 is a `hidden beast` number, since 1 + 68 + 3 + 6 + 91 + 497 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1142710416 + 540981081 = 33804^2 + 23259^2 .

It is not a de Polignac number, because 1683691497 - 2⁶ = 1683691433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1683691447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93538408 + ... + 93538425.

Almost surely, 2^1683691497 is an apocalyptic number.

It is an amenable number.

1683691497 is a deficient number, since it is larger than the sum of its proper divisors (748307345).

1683691497 is a wasteful number, since it uses less digits than its factorization.

1683691497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187076839 (or 187076836 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 1683691497 is about 41032.8100061402. The cubic root of 1683691497 is about 1189.6544666825.

The spelling of 1683691497 in words is "one billion, six hundred eighty-three million, six hundred ninety-one thousand, four hundred ninety-seven".