84453018 has 48 divisors (see below), whose sum is σ = 187924896. Its totient is φ = 25272000.

The previous prime is 84453011. The next prime is 84453023. The reversal of 84453018 is 81035448.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 84453018.

It is not an unprimeable number, because it can be changed into a prime (84453011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36393 + ... + 38643.

It is an arithmetic number, because the mean of its divisors is an integer number (3915102).

Almost surely, 2^84453018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84453018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93962448).

84453018 is an abundant number, since it is smaller than the sum of its proper divisors (103471878).

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

84453018 is a wasteful number, since it uses less digits than its factorization.

84453018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 84453018 is about 9189.8323162069. The cubic root of 84453018 is about 438.7378048737.

The spelling of 84453018 in words is "eighty-four million, four hundred fifty-three thousand, eighteen".