9018244840 has 96 divisors (see below), whose sum is σ = 22926252960. Its totient is φ = 3166150400.

The previous prime is 9018244783. The next prime is 9018244841. The reversal of 9018244840 is 484428109.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 9018244793 and 9018244802.

It is not an unprimeable number, because it can be changed into a prime (9018244841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357855 + ... + 382225.

It is an arithmetic number, because the mean of its divisors is an integer number (238815135).

Almost surely, 2^9018244840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9018244840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11463126480).

9018244840 is an abundant number, since it is smaller than the sum of its proper divisors (13908008120).

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

9018244840 is a wasteful number, since it uses less digits than its factorization.

9018244840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24451 (or 24418 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 9018244840 is about 94964.4398709327. The cubic root of 9018244840 is about 2081.4884593744.

The spelling of 9018244840 in words is "nine billion, eighteen million, two hundred forty-four thousand, eight hundred forty".