1928348945 has 4 divisors (see below), whose sum is σ = 2314018740. Its totient is φ = 1542679152.

The previous prime is 1928348927. The next prime is 1928348963. The reversal of 1928348945 is 5498438291.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1928348927) and next prime (1928348963).

It can be written as a sum of positive squares in 2 ways, for example, as 193126609 + 1735222336 = 13897^2 + 41656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928348945 - 2¹⁸ = 1928086801 is a prime.

It is a super-2 number, since 2×1928348945² = 7437059307365226050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192834890 + ... + 192834899.

It is an arithmetic number, because the mean of its divisors is an integer number (578504685).

Almost surely, 2^1928348945 is an apocalyptic number.

It is an amenable number.

1928348945 is a deficient number, since it is larger than the sum of its proper divisors (385669795).

1928348945 is an equidigital number, since it uses as much as digits as its factorization.

1928348945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385669794.

The product of its digits is 2488320, while the sum is 53.

The square root of 1928348945 is about 43912.9701227325. The cubic root of 1928348945 is about 1244.6919330458.

The spelling of 1928348945 in words is "one billion, nine hundred twenty-eight million, three hundred forty-eight thousand, nine hundred forty-five".