1920319930 has 32 divisors (see below), whose sum is σ = 3647295360. Its totient is φ = 725941440.

The previous prime is 1920319901. The next prime is 1920319991. The reversal of 1920319930 is 399130291.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1920319930.

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 15 ways as a sum of consecutive naturals, for example, 67987 + ... + 91993.

It is an arithmetic number, because the mean of its divisors is an integer number (113977980).

Almost surely, 2^1920319930 is an apocalyptic number.

1920319930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1920319930 is a deficient number, since it is larger than the sum of its proper divisors (1726975430).

1920319930 is a wasteful number, since it uses less digits than its factorization.

1920319930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24454.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 1920319930 is about 43821.4551333020. The cubic root of 1920319930 is about 1242.9620330541.

The spelling of 1920319930 in words is "one billion, nine hundred twenty million, three hundred nineteen thousand, nine hundred thirty".