1903722133896 has 768 divisors, whose sum is σ = 6380135424000. Its totient is φ = 510216537600.

The previous prime is 1903722133853. The next prime is 1903722133921. The reversal of 1903722133896 is 6983312273091.

1903722133896 is a `hidden beast` number, since 1 + 9 + 0 + 37 + 221 + 3 + 389 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1636905811 + ... + 1636906973.

It is an arithmetic number, because the mean of its divisors is an integer number (8307468000).

Almost surely, 2^{1903722133896} 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 1903722133896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3190067712000).

1903722133896 is an abundant number, since it is smaller than the sum of its proper divisors (4476413290104).

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

1903722133896 is a wasteful number, since it uses less digits than its factorization.

1903722133896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 1903722133896 in words is "one trillion, nine hundred three billion, seven hundred twenty-two million, one hundred thirty-three thousand, eight hundred ninety-six".