1920193943 has 2 divisors, whose sum is σ = 1920193944. Its totient is φ = 1920193942.

The previous prime is 1920193901. The next prime is 1920193963. The reversal of 1920193943 is 3493910291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1920193943 - 2⁸ = 1920193687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1920193943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1920193963) by changing a digit.

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 as a sum of consecutive naturals, namely, 960096971 + 960096972.

It is an arithmetic number, because the mean of its divisors is an integer number (960096972).

Almost surely, 2^1920193943 is an apocalyptic number.

1920193943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920193943 is an equidigital number, since it uses as much as digits as its factorization.

1920193943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1920193943 is about 43820.0176061124. The cubic root of 1920193943 is about 1242.9348499999.

The spelling of 1920193943 in words is "one billion, nine hundred twenty million, one hundred ninety-three thousand, nine hundred forty-three".