1018227840 has 384 divisors, whose sum is σ = 3851193600. Its totient is φ = 228114432.

The previous prime is 1018227839. The next prime is 1018227857. The reversal of 1018227840 is 487228101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a zygodrome in base 14.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 7432252 + ... + 7432388.

It is an arithmetic number, because the mean of its divisors is an integer number (10029150).

Almost surely, 2^1018227840 is an apocalyptic number.

1018227840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1018227840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1925596800).

1018227840 is an abundant number, since it is smaller than the sum of its proper divisors (2832965760).

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

1018227840 is a wasteful number, since it uses less digits than its factorization.

1018227840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1018227840 is about 31909.6825430777. The cubic root of 1018227840 is about 1006.0393988999.

The spelling of 1018227840 in words is "one billion, eighteen million, two hundred twenty-seven thousand, eight hundred forty".