2119851384 has 64 divisors (see below), whose sum is σ = 6060253440. Its totient is φ = 605318400.

The previous prime is 2119851347. The next prime is 2119851389. The reversal of 2119851384 is 4831589112.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119851389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453459 + ... + 458109.

It is an arithmetic number, because the mean of its divisors is an integer number (94691460).

Almost surely, 2^2119851384 is an apocalyptic number.

2119851384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2119851384 is an abundant number, since it is smaller than the sum of its proper divisors (3940402056).

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

2119851384 is a wasteful number, since it uses less digits than its factorization.

2119851384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 7376 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 2119851384 is about 46041.8438379698. The cubic root of 2119851384 is about 1284.6016386433.

The spelling of 2119851384 in words is "two billion, one hundred nineteen million, eight hundred fifty-one thousand, three hundred eighty-four".