1918846328 has 64 divisors (see below), whose sum is σ = 4370496000. Its totient is φ = 771472512.

The previous prime is 1918846313. The next prime is 1918846357. The reversal of 1918846328 is 8236488191.

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 15 ways as a sum of consecutive naturals, for example, 100838 + ... + 118346.

It is an arithmetic number, because the mean of its divisors is an integer number (68289000).

Almost surely, 2^1918846328 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 1918846328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185248000).

1918846328 is an abundant number, since it is smaller than the sum of its proper divisors (2451649672).

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

1918846328 is a wasteful number, since it uses less digits than its factorization.

1918846328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17644 (or 17640 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 1918846328 is about 43804.6382019073. The cubic root of 1918846328 is about 1242.6440131201.

The spelling of 1918846328 in words is "one billion, nine hundred eighteen million, eight hundred forty-six thousand, three hundred twenty-eight".