1918988032 has 72 divisors (see below), whose sum is σ = 4147488576. Its totient is φ = 880889856.

The previous prime is 1918987997. The next prime is 1918988063. The reversal of 1918988032 is 2308898191.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 654153 + ... + 657079.

It is an arithmetic number, because the mean of its divisors is an integer number (57604008).

Almost surely, 2^1918988032 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 1918988032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073744288).

1918988032 is an abundant number, since it is smaller than the sum of its proper divisors (2228500544).

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

1918988032 is a wasteful number, since it uses less digits than its factorization.

1918988032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 1918988032 is about 43806.2556263372. The cubic root of 1918988032 is about 1242.6746015158.

The spelling of 1918988032 in words is "one billion, nine hundred eighteen million, nine hundred eighty-eight thousand, thirty-two".