1928382813 has 48 divisors (see below), whose sum is σ = 3376379136. Its totient is φ = 1036696320.

The previous prime is 1928382809. The next prime is 1928382821. The reversal of 1928382813 is 3182838291.

It is a happy number.

1928382813 is a `hidden beast` number, since 192 + 8 + 382 + 81 + 3 = 666.

It is not a de Polignac number, because 1928382813 - 2² = 1928382809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928383813) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 77481 + ... + 99297.

It is an arithmetic number, because the mean of its divisors is an integer number (70341232).

Almost surely, 2^1928382813 is an apocalyptic number.

It is an amenable number.

1928382813 is a deficient number, since it is larger than the sum of its proper divisors (1447996323).

1928382813 is a wasteful number, since it uses less digits than its factorization.

1928382813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21914 (or 21911 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 1928382813 is about 43913.3557474261. The cubic root of 1928382813 is about 1244.6992199323.

The spelling of 1928382813 in words is "one billion, nine hundred twenty-eight million, three hundred eighty-two thousand, eight hundred thirteen".