1603941809904 has 240 divisors, whose sum is σ = 5329299855360. Its totient is φ = 440660113920.

The previous prime is 1603941809881. The next prime is 1603941809947. The reversal of 1603941809904 is 4099081493061.

It is a happy number.

1603941809904 is a `hidden beast` number, since 160 + 394 + 1 + 8 + 0 + 9 + 90 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4742467 + ... + 5069405.

It is an arithmetic number, because the mean of its divisors is an integer number (22205416064).

Almost surely, 2^{1603941809904} is an apocalyptic number.

1603941809904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1603941809904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664649927680).

1603941809904 is an abundant number, since it is smaller than the sum of its proper divisors (3725358045456).

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

1603941809904 is a wasteful number, since it uses less digits than its factorization.

1603941809904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327148 (or 327139 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1603941809904 in words is "one trillion, six hundred three billion, nine hundred forty-one million, eight hundred nine thousand, nine hundred four".