1928275730 has 8 divisors (see below), whose sum is σ = 3470896332. Its totient is φ = 771310288.

The previous prime is 1928275729. The next prime is 1928275753. The reversal of 1928275730 is 375728291.

It can be written as a sum of positive squares in 2 ways, for example, as 1763076121 + 165199609 = 41989^2 + 12853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 96413777 + ... + 96413796.

Almost surely, 2^1928275730 is an apocalyptic number.

1928275730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1928275730 is a deficient number, since it is larger than the sum of its proper divisors (1542620602).

1928275730 is a wasteful number, since it uses less digits than its factorization.

1928275730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192827580.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 1928275730 is about 43912.1364772884. The cubic root of 1928275730 is about 1244.6761801443.

The spelling of 1928275730 in words is "one billion, nine hundred twenty-eight million, two hundred seventy-five thousand, seven hundred thirty".