1897204981744 has 20 divisors (see below), whose sum is σ = 3869299634440. Its totient is φ = 898676043840.

The previous prime is 1897204981709. The next prime is 1897204981769. The reversal of 1897204981744 is 4471894027981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3120402627 + ... + 3120403234.

It is an arithmetic number, because the mean of its divisors is an integer number (193464981722).

Almost surely, 2^{1897204981744} is an apocalyptic number.

It is an amenable number.

1897204981744 is an abundant number, since it is smaller than the sum of its proper divisors (1972094652696).

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

1897204981744 is a wasteful number, since it uses less digits than its factorization.

1897204981744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240805888 (or 6240805882 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 1897204981744 in words is "one trillion, eight hundred ninety-seven billion, two hundred four million, nine hundred eighty-one thousand, seven hundred forty-four".