1848644890097 has 4 divisors (see below), whose sum is σ = 1848653190516. Its totient is φ = 1848636589680.

The previous prime is 1848644890031. The next prime is 1848644890163. The reversal of 1848644890097 is 7900984468481.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1848644890031) and next prime (1848644890163).

It can be written as a sum of positive squares in 2 ways, for example, as 1749842169856 + 98802720241 = 1322816^2 + 314329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1848644890097 - 2⁸ = 1848644889841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1848644890007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3806654 + ... + 4264727.

It is an arithmetic number, because the mean of its divisors is an integer number (462163297629).

Almost surely, 2^{1848644890097} is an apocalyptic number.

It is an amenable number.

1848644890097 is a deficient number, since it is larger than the sum of its proper divisors (8300419).

1848644890097 is an equidigital number, since it uses as much as digits as its factorization.

1848644890097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8300418.

The product of its (nonzero) digits is 111476736, while the sum is 68.

The spelling of 1848644890097 in words is "one trillion, eight hundred forty-eight billion, six hundred forty-four million, eight hundred ninety thousand, ninety-seven".