1018317816 has 144 divisors (see below), whose sum is σ = 2982938400. Its totient is φ = 312743424.

The previous prime is 1018317767. The next prime is 1018317827. The reversal of 1018317816 is 6187138101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 4260625 + ... + 4260863.

It is an arithmetic number, because the mean of its divisors is an integer number (20714850).

Almost surely, 2^1018317816 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 1018317816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491469200).

1018317816 is an abundant number, since it is smaller than the sum of its proper divisors (1964620584).

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

1018317816 is a wasteful number, since it uses less digits than its factorization.

1018317816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1018317816 is about 31911.0923661350. The cubic root of 1018317816 is about 1006.0690310154.

The spelling of 1018317816 in words is "one billion, eighteen million, three hundred seventeen thousand, eight hundred sixteen".