2238278057 has 2 divisors, whose sum is σ = 2238278058. Its totient is φ = 2238278056.

The previous prime is 2238278047. The next prime is 2238278117. The reversal of 2238278057 is 7508728322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1887989401 + 350288656 = 43451^2 + 18716^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238278057 - 2⁴ = 2238278041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2238277999 and 2238278017.

It is not a weakly prime, because it can be changed into another prime (2238278047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119139028 + 1119139029.

It is an arithmetic number, because the mean of its divisors is an integer number (1119139029).

Almost surely, 2^2238278057 is an apocalyptic number.

It is an amenable number.

2238278057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238278057 is an equidigital number, since it uses as much as digits as its factorization.

2238278057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 2238278057 is about 47310.4434242589. The cubic root of 2238278057 is about 1308.0911649293.

The spelling of 2238278057 in words is "two billion, two hundred thirty-eight million, two hundred seventy-eight thousand, fifty-seven".