1943399056 has 45 divisors (see below), whose sum is σ = 3838114371. Its totient is φ = 953272416.

The previous prime is 1943399039. The next prime is 1943399093. The reversal of 1943399056 is 6509933491.

The square root of 1943399056 is 44084.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1943399056² = 7553599781723382272, which contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 18162555 + ... + 18162661.

Almost surely, 2^1943399056 is an apocalyptic number.

1943399056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1943399056 is the 44084-th square number.

It is an amenable number.

1943399056 is a deficient number, since it is larger than the sum of its proper divisors (1894715315).

1943399056 is an equidigital number, since it uses as much as digits as its factorization.

1943399056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 49.

The cubic root of 1943399056 is about 1247.9216783250.

Multiplying 1943399056 by its sum of digits (49), we get a square (95226553744 = 308588²).

The spelling of 1943399056 in words is "one billion, nine hundred forty-three million, three hundred ninety-nine thousand, fifty-six".