851966349 has 12 divisors (see below), whose sum is σ = 1230058656. Its totient is φ = 524286672.

The previous prime is 851966317. The next prime is 851966351. The reversal of 851966349 is 943669158.

It is not a de Polignac number, because 851966349 - 2⁵ = 851966317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851966359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 839697 + ... + 840710.

It is an arithmetic number, because the mean of its divisors is an integer number (102504888).

Almost surely, 2^851966349 is an apocalyptic number.

It is an amenable number.

851966349 is a deficient number, since it is larger than the sum of its proper divisors (378092307).

851966349 is a wasteful number, since it uses less digits than its factorization.

851966349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680436 (or 1680423 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 851966349 is about 29188.4626008291. The cubic root of 851966349 is about 947.9981295251.

The spelling of 851966349 in words is "eight hundred fifty-one million, nine hundred sixty-six thousand, three hundred forty-nine".