851343965 has 16 divisors (see below), whose sum is σ = 1066867200. Its totient is φ = 650952192.

The previous prime is 851343949. The next prime is 851343991. The reversal of 851343965 is 569343158.

It is a cyclic number.

It is not a de Polignac number, because 851343965 - 2⁴ = 851343949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215276 + ... + 219194.

It is an arithmetic number, because the mean of its divisors is an integer number (66679200).

Almost surely, 2^851343965 is an apocalyptic number.

It is an amenable number.

851343965 is a deficient number, since it is larger than the sum of its proper divisors (215523235).

851343965 is a wasteful number, since it uses less digits than its factorization.

851343965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836.

The product of its digits is 388800, while the sum is 44.

The square root of 851343965 is about 29177.7991801986. The cubic root of 851343965 is about 947.7672273688.

The spelling of 851343965 in words is "eight hundred fifty-one million, three hundred forty-three thousand, nine hundred sixty-five".