849183036509 has 4 divisors (see below), whose sum is σ = 849291344700. Its totient is φ = 849074728320.

The previous prime is 849183036497. The next prime is 849183036521. The reversal of 849183036509 is 905630381948.

It is a happy number.

849183036509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (849183036497) and next prime (849183036521).

It can be written as a sum of positive squares in 2 ways, for example, as 85913472100 + 763269564409 = 293110^2 + 873653^2 .

It is a cyclic number.

It is not a de Polignac number, because 849183036509 - 2²⁸ = 848914601053 is a prime.

It is a super-2 number, since 2×849183036509² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849183036529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54142334 + ... + 54158015.

It is an arithmetic number, because the mean of its divisors is an integer number (212322836175).

Almost surely, 2^849183036509 is an apocalyptic number.

It is an amenable number.

849183036509 is a deficient number, since it is larger than the sum of its proper divisors (108308191).

849183036509 is a wasteful number, since it uses less digits than its factorization.

849183036509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108308190.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 849183036509 in words is "eight hundred forty-nine billion, one hundred eighty-three million, thirty-six thousand, five hundred nine".