1683903854544 has 80 divisors (see below), whose sum is σ = 4435253000640. Its totient is φ = 550418042880.

The previous prime is 1683903854513. The next prime is 1683903854557. The reversal of 1683903854544 is 4454583093861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151502 + ... + 2166509.

It is an arithmetic number, because the mean of its divisors is an integer number (55440662508).

Almost surely, 2^{1683903854544} is an apocalyptic number.

It is an amenable number.

1683903854544 is an abundant number, since it is smaller than the sum of its proper divisors (2751349146096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1683903854544 is a wasteful number, since it uses less digits than its factorization.

1683903854544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318228 (or 3318222 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 60.

The spelling of 1683903854544 in words is "one trillion, six hundred eighty-three billion, nine hundred three million, eight hundred fifty-four thousand, five hundred forty-four".