1943420928 has 120 divisors (see below), whose sum is σ = 5457671520. Its totient is φ = 613416960.

The previous prime is 1943420911. The next prime is 1943420939. The reversal of 1943420928 is 8290243491.

It is a self number, because there is not a number n which added to its sum of digits gives 1943420928.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932848 + ... + 934928.

It is an arithmetic number, because the mean of its divisors is an integer number (45480596).

Almost surely, 2^1943420928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1943420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2728835760).

1943420928 is an abundant number, since it is smaller than the sum of its proper divisors (3514250592).

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

1943420928 is an equidigital number, since it uses as much as digits as its factorization.

1943420928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1943420928 is about 44084.2480711648. The cubic root of 1943420928 is about 1247.9263598889.

The spelling of 1943420928 in words is "one billion, nine hundred forty-three million, four hundred twenty thousand, nine hundred twenty-eight".