4945090123 has 2 divisors, whose sum is σ = 4945090124. Its totient is φ = 4945090122.

The previous prime is 4945090109. The next prime is 4945090181. The reversal of 4945090123 is 3210905494.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4945090123 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (4945990123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472545061 + 2472545062.

It is an arithmetic number, because the mean of its divisors is an integer number (2472545062).

Almost surely, 2^4945090123 is an apocalyptic number.

4945090123 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945090123 is an equidigital number, since it uses as much as digits as its factorization.

4945090123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 4945090123 is about 70321.3347640672. The cubic root of 4945090123 is about 1703.6932535183.

The spelling of 4945090123 in words is "four billion, nine hundred forty-five million, ninety thousand, one hundred twenty-three".