1963440043 has 2 divisors, whose sum is σ = 1963440044. Its totient is φ = 1963440042.

The previous prime is 1963439981. The next prime is 1963440077. The reversal of 1963440043 is 3400443691.

It is an a-pointer prime, because the next prime (1963440077) can be obtained adding 1963440043 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1963440043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1963439990 and 1963440008.

It is not a weakly prime, because it can be changed into another prime (1963440443) 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, 981720021 + 981720022.

It is an arithmetic number, because the mean of its divisors is an integer number (981720022).

Almost surely, 2^1963440043 is an apocalyptic number.

1963440043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963440043 is an equidigital number, since it uses as much as digits as its factorization.

1963440043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1963440043 is about 44310.7215355381. The cubic root of 1963440043 is about 1252.1966799232.

The spelling of 1963440043 in words is "one billion, nine hundred sixty-three million, four hundred forty thousand, forty-three".