2128319494 has 16 divisors (see below), whose sum is σ = 3667654656. Its totient is φ = 907360200.

The previous prime is 2128319429. The next prime is 2128319509. The reversal of 2128319494 is 4949138212.

It is a self number, because there is not a number n which added to its sum of digits gives 2128319494.

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 7 ways as a sum of consecutive naturals, for example, 395292 + ... + 400639.

It is an arithmetic number, because the mean of its divisors is an integer number (229228416).

Almost surely, 2^2128319494 is an apocalyptic number.

2128319494 is a deficient number, since it is larger than the sum of its proper divisors (1539335162).

2128319494 is a wasteful number, since it uses less digits than its factorization.

2128319494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796131.

The product of its digits is 124416, while the sum is 43.

The square root of 2128319494 is about 46133.7132041200. The cubic root of 2128319494 is about 1286.3098865656.

The spelling of 2128319494 in words is "two billion, one hundred twenty-eight million, three hundred nineteen thousand, four hundred ninety-four".