1683641216439 has 96 divisors (see below), whose sum is σ = 3033963039744. Its totient is φ = 875995845120.

The previous prime is 1683641216431. The next prime is 1683641216449. The reversal of 1683641216439 is 9346121463861.

It is a happy number.

1683641216439 is a `hidden beast` number, since 1 + 6 + 8 + 36 + 412 + 164 + 39 = 666.

It is not a de Polignac number, because 1683641216439 - 2³ = 1683641216431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683641216431) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 43961979 + ... + 44000259.

It is an arithmetic number, because the mean of its divisors is an integer number (31603781664).

Almost surely, 2^{1683641216439} is an apocalyptic number.

1683641216439 is a deficient number, since it is larger than the sum of its proper divisors (1350321823305).

1683641216439 is a wasteful number, since it uses less digits than its factorization.

1683641216439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39037 (or 39034 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 1683641216439 in words is "one trillion, six hundred eighty-three billion, six hundred forty-one million, two hundred sixteen thousand, four hundred thirty-nine".