1897036622866 has 16 divisors (see below), whose sum is σ = 3547704853440. Its totient is φ = 739105177680.

The previous prime is 1897036622851. The next prime is 1897036622909. The reversal of 1897036622866 is 6682266307981.

It is a junction number, because it is equal to n+sod(n) for n = 1897036622798 and 1897036622807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6159209661 + ... + 6159209968.

It is an arithmetic number, because the mean of its divisors is an integer number (221731553340).

Almost surely, 2^{1897036622866} is an apocalyptic number.

1897036622866 is a deficient number, since it is larger than the sum of its proper divisors (1650668230574).

1897036622866 is a wasteful number, since it uses less digits than its factorization.

1897036622866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318419649.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 1897036622866 in words is "one trillion, eight hundred ninety-seven billion, thirty-six million, six hundred twenty-two thousand, eight hundred sixty-six".