2238138673 has 2 divisors, whose sum is σ = 2238138674. Its totient is φ = 2238138672.

The previous prime is 2238138659. The next prime is 2238138677. The reversal of 2238138673 is 3768318322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2238046864 + 91809 = 47308^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238138673 - 2²⁹ = 1701267761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2238138677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119069336 + 1119069337.

It is an arithmetic number, because the mean of its divisors is an integer number (1119069337).

Almost surely, 2^2238138673 is an apocalyptic number.

It is an amenable number.

2238138673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238138673 is an equidigital number, since it uses as much as digits as its factorization.

2238138673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 2238138673 is about 47308.9703227623. The cubic root of 2238138673 is about 1308.0640115016.

The spelling of 2238138673 in words is "two billion, two hundred thirty-eight million, one hundred thirty-eight thousand, six hundred seventy-three".