84811851 has 12 divisors (see below), whose sum is σ = 124583160. Its totient is φ = 55582560.

The previous prime is 84811841. The next prime is 84811873. The reversal of 84811851 is 15811848.

It is a happy number.

It is not a de Polignac number, because 84811851 - 2⁷ = 84811723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84811841) 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, 79330 + ... + 80391.

It is an arithmetic number, because the mean of its divisors is an integer number (10381930).

Almost surely, 2^84811851 is an apocalyptic number.

84811851 is a deficient number, since it is larger than the sum of its proper divisors (39771309).

84811851 is a wasteful number, since it uses less digits than its factorization.

84811851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159786 (or 159783 counting only the distinct ones).

The product of its digits is 10240, while the sum is 36.

The square root of 84811851 is about 9209.3349922782. The cubic root of 84811851 is about 439.3583122190.

The spelling of 84811851 in words is "eighty-four million, eight hundred eleven thousand, eight hundred fifty-one".