1897386682808 has 8 divisors (see below), whose sum is σ = 3557600030280. Its totient is φ = 948693341400.

The previous prime is 1897386682781. The next prime is 1897386682823. The reversal of 1897386682808 is 8082866837981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118586667668 + ... + 118586667683.

It is an arithmetic number, because the mean of its divisors is an integer number (444700003785).

Almost surely, 2^{1897386682808} is an apocalyptic number.

It is an amenable number.

1897386682808 is a deficient number, since it is larger than the sum of its proper divisors (1660213347472).

1897386682808 is a wasteful number, since it uses less digits than its factorization.

1897386682808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237173335357 (or 237173335353 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 74.

The spelling of 1897386682808 in words is "one trillion, eight hundred ninety-seven billion, three hundred eighty-six million, six hundred eighty-two thousand, eight hundred eight".