851743941 has 16 divisors (see below), whose sum is σ = 1182681600. Its totient is φ = 544642560.

The previous prime is 851743931. The next prime is 851743943. The reversal of 851743941 is 149347158.

It is a happy number.

It is not a de Polignac number, because 851743941 - 2¹⁵ = 851711173 is a prime.

It is a super-2 number, since 2×851743941² = 1450935482060422962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 851743893 and 851743902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851743943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30016 + ... + 51033.

It is an arithmetic number, because the mean of its divisors is an integer number (73917600).

Almost surely, 2^851743941 is an apocalyptic number.

It is an amenable number.

851743941 is a deficient number, since it is larger than the sum of its proper divisors (330937659).

851743941 is a wasteful number, since it uses less digits than its factorization.

851743941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81196.

The product of its digits is 120960, while the sum is 42.

The square root of 851743941 is about 29184.6524906499. The cubic root of 851743941 is about 947.9156298982.

The spelling of 851743941 in words is "eight hundred fifty-one million, seven hundred forty-three thousand, nine hundred forty-one".