849512645 has 4 divisors (see below), whose sum is σ = 1019415180. Its totient is φ = 679610112.

The previous prime is 849512611. The next prime is 849512681. The reversal of 849512645 is 546215948.

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

It can be written as a sum of positive squares in 2 ways, for example, as 353515204 + 495997441 = 18802^2 + 22271^2 .

It is a cyclic number.

It is not a de Polignac number, because 849512645 - 2²⁶ = 782403781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 849512596 and 849512605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84951260 + ... + 84951269.

It is an arithmetic number, because the mean of its divisors is an integer number (254853795).

Almost surely, 2^849512645 is an apocalyptic number.

It is an amenable number.

849512645 is a deficient number, since it is larger than the sum of its proper divisors (169902535).

849512645 is a wasteful number, since it uses less digits than its factorization.

849512645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169902534.

The product of its digits is 345600, while the sum is 44.

The square root of 849512645 is about 29146.4002065435. The cubic root of 849512645 is about 947.0871610403.

The spelling of 849512645 in words is "eight hundred forty-nine million, five hundred twelve thousand, six hundred forty-five".