83851845 has 64 divisors (see below), whose sum is σ = 176117760. Its totient is φ = 33004800.

The previous prime is 83851843. The next prime is 83851861. The reversal of 83851845 is 54815838.

It is not a de Polignac number, because 83851845 - 2¹ = 83851843 is a prime.

It is a super-2 number, since 2×83851845² = 14062263819808050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83851797 and 83851806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83851843) 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 63 ways as a sum of consecutive naturals, for example, 20035 + ... + 23855.

It is an arithmetic number, because the mean of its divisors is an integer number (2751840).

Almost surely, 2^83851845 is an apocalyptic number.

It is an amenable number.

83851845 is an abundant number, since it is smaller than the sum of its proper divisors (92265915).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83851845 is a wasteful number, since it uses less digits than its factorization.

83851845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866.

The product of its digits is 153600, while the sum is 42.

The square root of 83851845 is about 9157.0653049981. The cubic root of 83851845 is about 437.6942832345.

The spelling of 83851845 in words is "eighty-three million, eight hundred fifty-one thousand, eight hundred forty-five".