845518641 has 16 divisors (see below), whose sum is σ = 1231158528. Its totient is φ = 511888400.

The previous prime is 845518573. The next prime is 845518649. The reversal of 845518641 is 146815548.

845518641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 845518641 - 2¹⁵ = 845485873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 845518593 and 845518602.

It is not an unprimeable number, because it can be changed into a prime (845518649) 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, 18850 + ... + 45236.

It is an arithmetic number, because the mean of its divisors is an integer number (76947408).

Almost surely, 2^845518641 is an apocalyptic number.

It is an amenable number.

845518641 is a deficient number, since it is larger than the sum of its proper divisors (385639887).

845518641 is a wasteful number, since it uses less digits than its factorization.

845518641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27372.

The product of its digits is 153600, while the sum is 42.

The square root of 845518641 is about 29077.8032354578. The cubic root of 845518641 is about 945.6005778922.

The spelling of 845518641 in words is "eight hundred forty-five million, five hundred eighteen thousand, six hundred forty-one".