2119728946 has 32 divisors (see below), whose sum is σ = 3529044288. Its totient is φ = 950530560.

The previous prime is 2119728913. The next prime is 2119728971. The reversal of 2119728946 is 6498279112.

It is a self number, because there is not a number n which added to its sum of digits gives 2119728946.

It is an unprimeable number.

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, 42261 + ... + 77623.

It is an arithmetic number, because the mean of its divisors is an integer number (110282634).

Almost surely, 2^2119728946 is an apocalyptic number.

2119728946 is a deficient number, since it is larger than the sum of its proper divisors (1409315342).

2119728946 is a wasteful number, since it uses less digits than its factorization.

2119728946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35466.

The product of its digits is 435456, while the sum is 49.

The square root of 2119728946 is about 46040.5141804476. The cubic root of 2119728946 is about 1284.5769062360.

The spelling of 2119728946 in words is "two billion, one hundred nineteen million, seven hundred twenty-eight thousand, nine hundred forty-six".