1928309340 has 48 divisors (see below), whose sum is σ = 5406815232. Its totient is φ = 513496896.

The previous prime is 1928309323. The next prime is 1928309359. The reversal of 1928309340 is 439038291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21517 + ... + 65723.

It is an arithmetic number, because the mean of its divisors is an integer number (112641984).

Almost surely, 2^1928309340 is an apocalyptic number.

1928309340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1928309340 is an abundant number, since it is smaller than the sum of its proper divisors (3478505892).

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

1928309340 is a wasteful number, since it uses less digits than its factorization.

1928309340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44946 (or 44944 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1928309340 is about 43912.5191716440. The cubic root of 1928309340 is about 1244.6834117040.

The spelling of 1928309340 in words is "one billion, nine hundred twenty-eight million, three hundred nine thousand, three hundred forty".