1840648641 has 8 divisors (see below), whose sum is σ = 2642982720. Its totient is φ = 1132706832.

The previous prime is 1840648637. The next prime is 1840648651. The reversal of 1840648641 is 1468460481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1840648641 - 2² = 1840648637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1840648593 and 1840648602.

It is not an unprimeable number, because it can be changed into a prime (1840648651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23598021 + ... + 23598098.

It is an arithmetic number, because the mean of its divisors is an integer number (330372840).

Almost surely, 2^1840648641 is an apocalyptic number.

It is an amenable number.

1840648641 is a deficient number, since it is larger than the sum of its proper divisors (802334079).

1840648641 is a wasteful number, since it uses less digits than its factorization.

1840648641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47196135.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 1840648641 is about 42902.7812734792. The cubic root of 1840648641 is about 1225.5291099838.

The spelling of 1840648641 in words is "one billion, eight hundred forty million, six hundred forty-eight thousand, six hundred forty-one".