1840688845 has 16 divisors (see below), whose sum is σ = 2256346368. Its totient is φ = 1441175680.

The previous prime is 1840688813. The next prime is 1840688849. The reversal of 1840688845 is 5488860481.

It is not a de Polignac number, because 1840688845 - 2⁵ = 1840688813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1840688792 and 1840688801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840688849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29712 + ... + 67558.

It is an arithmetic number, because the mean of its divisors is an integer number (141021648).

Almost surely, 2^1840688845 is an apocalyptic number.

It is an amenable number.

1840688845 is a deficient number, since it is larger than the sum of its proper divisors (415657523).

1840688845 is a wasteful number, since it uses less digits than its factorization.

1840688845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38060.

The product of its (nonzero) digits is 1966080, while the sum is 52.

The square root of 1840688845 is about 42903.2498186326. The cubic root of 1840688845 is about 1225.5380327104.

The spelling of 1840688845 in words is "one billion, eight hundred forty million, six hundred eighty-eight thousand, eight hundred forty-five".