1331917194204 has 96 divisors (see below), whose sum is σ = 3473474618880. Its totient is φ = 441360057600.

The previous prime is 1331917194121. The next prime is 1331917194239. The reversal of 1331917194204 is 4024917191331.

1331917194204 is a `hidden beast` number, since 1 + 33 + 191 + 7 + 1 + 9 + 420 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1331917194204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20043057 + ... + 20109399.

It is an arithmetic number, because the mean of its divisors is an integer number (36182027280).

Almost surely, 2^{1331917194204} 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 1331917194204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736737309440).

1331917194204 is an abundant number, since it is smaller than the sum of its proper divisors (2141557424676).

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

1331917194204 is a wasteful number, since it uses less digits than its factorization.

1331917194204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67448 (or 67440 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 1331917194204 in words is "one trillion, three hundred thirty-one billion, nine hundred seventeen million, one hundred ninety-four thousand, two hundred four".