1903738223728 has 80 divisors (see below), whose sum is σ = 4066391377152. Its totient is φ = 856192896000.

The previous prime is 1903738223711. The next prime is 1903738223753. The reversal of 1903738223728 is 8273228373091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21183048 + ... + 21272728.

Almost surely, 2^{1903738223728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1903738223728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2033195688576).

1903738223728 is an abundant number, since it is smaller than the sum of its proper divisors (2162653153424).

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

1903738223728 is a wasteful number, since it uses less digits than its factorization.

1903738223728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90974 (or 90968 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 1903738223728 in words is "one trillion, nine hundred three billion, seven hundred thirty-eight million, two hundred twenty-three thousand, seven hundred twenty-eight".