4644142043 has 2 divisors, whose sum is σ = 4644142044. Its totient is φ = 4644142042.

The previous prime is 4644142007. The next prime is 4644142057. The reversal of 4644142043 is 3402414464.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644142043 is a prime.

It is not a weakly prime, because it can be changed into another prime (4644142073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322071021 + 2322071022.

It is an arithmetic number, because the mean of its divisors is an integer number (2322071022).

Almost surely, 2^4644142043 is an apocalyptic number.

4644142043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644142043 is an equidigital number, since it uses as much as digits as its factorization.

4644142043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 4644142043 is about 68147.9423240350. The cubic root of 4644142043 is about 1668.4063397618.

The spelling of 4644142043 in words is "four billion, six hundred forty-four million, one hundred forty-two thousand, forty-three".