9868849645 has 8 divisors (see below), whose sum is σ = 11951268120. Its totient is φ = 7822647360.

The previous prime is 9868849643. The next prime is 9868849687. The reversal of 9868849645 is 5469488689.

It can be written as a sum of positive squares in 4 ways, for example, as 3079584036 + 6789265609 = 55494^2 + 82397^2 .

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

It is not a de Polignac number, because 9868849645 - 2¹ = 9868849643 is a prime.

It is a super-3 number, since 3×9868849645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9868849643) 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, 9053446 + ... + 9054535.

It is an arithmetic number, because the mean of its divisors is an integer number (1493908515).

Almost surely, 2^9868849645 is an apocalyptic number.

It is an amenable number.

9868849645 is a deficient number, since it is larger than the sum of its proper divisors (2082418475).

9868849645 is a wasteful number, since it uses less digits than its factorization.

9868849645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18108095.

The product of its digits is 119439360, while the sum is 67.

The square root of 9868849645 is about 99342.0839574045. The cubic root of 9868849645 is about 2144.9747169299.

The spelling of 9868849645 in words is "nine billion, eight hundred sixty-eight million, eight hundred forty-nine thousand, six hundred forty-five".