849164951 has 4 divisors (see below), whose sum is σ = 849641400. Its totient is φ = 848688504.

The previous prime is 849164893. The next prime is 849164971. The reversal of 849164951 is 159461948.

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

It is a cyclic number.

It is not a de Polignac number, because 849164951 - 2¹⁸ = 848902807 is a prime.

It is a super-2 number, since 2×849164951² = 1442162228013664802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849164896 and 849164905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849164971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235541 + ... + 239118.

It is an arithmetic number, because the mean of its divisors is an integer number (212410350).

Almost surely, 2^849164951 is an apocalyptic number.

849164951 is a deficient number, since it is larger than the sum of its proper divisors (476449).

849164951 is a wasteful number, since it uses less digits than its factorization.

849164951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476448.

The product of its digits is 311040, while the sum is 47.

The square root of 849164951 is about 29140.4349830266. The cubic root of 849164951 is about 946.9579334331.

The spelling of 849164951 in words is "eight hundred forty-nine million, one hundred sixty-four thousand, nine hundred fifty-one".