1845649819986 has 64 divisors (see below), whose sum is σ = 4288156421376. Its totient is φ = 518638982400.

The previous prime is 1845649819967. The next prime is 1845649819987. The reversal of 1845649819986 is 6899189465481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1845649819987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39362196 + ... + 39409056.

It is an arithmetic number, because the mean of its divisors is an integer number (67002444084).

Almost surely, 2^{1845649819986} is an apocalyptic number.

1845649819986 is an abundant number, since it is smaller than the sum of its proper divisors (2442506601390).

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

1845649819986 is a wasteful number, since it uses less digits than its factorization.

1845649819986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62307.

The product of its digits is 1074954240, while the sum is 78.

The spelling of 1845649819986 in words is "one trillion, eight hundred forty-five billion, six hundred forty-nine million, eight hundred nineteen thousand, nine hundred eighty-six".