1928770660 has 12 divisors (see below), whose sum is σ = 4050418428. Its totient is φ = 771508256.

The previous prime is 1928770643. The next prime is 1928770661. The reversal of 1928770660 is 660778291.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 851355684 + 1077414976 = 29178^2 + 32824^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1928770660.

It is not an unprimeable number, because it can be changed into a prime (1928770661) 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 3 ways as a sum of consecutive naturals, for example, 48219247 + ... + 48219286.

It is an arithmetic number, because the mean of its divisors is an integer number (337534869).

Almost surely, 2^1928770660 is an apocalyptic number.

1928770660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1928770660 is an abundant number, since it is smaller than the sum of its proper divisors (2121647768).

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

1928770660 is a wasteful number, since it uses less digits than its factorization.

1928770660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96438542 (or 96438540 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1928770660 is about 43917.7715737035. The cubic root of 1928770660 is about 1244.7826612653.

The spelling of 1928770660 in words is "one billion, nine hundred twenty-eight million, seven hundred seventy thousand, six hundred sixty".