2238473857 has 2 divisors, whose sum is σ = 2238473858. Its totient is φ = 2238473856.

The previous prime is 2238473851. The next prime is 2238473863. The reversal of 2238473857 is 7583748322.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2238473851) and next prime (2238473863).

It can be written as a sum of positive squares in only one way, i.e., 1745234176 + 493239681 = 41776^2 + 22209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238473857 - 2¹⁵ = 2238441089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2238473857.

It is not a weakly prime, because it can be changed into another prime (2238473851) 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, 1119236928 + 1119236929.

It is an arithmetic number, because the mean of its divisors is an integer number (1119236929).

Almost surely, 2^2238473857 is an apocalyptic number.

It is an amenable number.

2238473857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238473857 is an equidigital number, since it uses as much as digits as its factorization.

2238473857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 49.

The square root of 2238473857 is about 47312.5126895624. The cubic root of 2238473857 is about 1308.1293068663.

The spelling of 2238473857 in words is "two billion, two hundred thirty-eight million, four hundred seventy-three thousand, eight hundred fifty-seven".