228378501149 has 2 divisors, whose sum is σ = 228378501150. Its totient is φ = 228378501148.

The previous prime is 228378501067. The next prime is 228378501157. The reversal of 228378501149 is 941105873822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221737392100 + 6641109049 = 470890^2 + 81493^2 .

It is a cyclic number.

It is not a de Polignac number, because 228378501149 - 2⁸ = 228378500893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228378501097 and 228378501106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228378501349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114189250574 + 114189250575.

It is an arithmetic number, because the mean of its divisors is an integer number (114189250575).

Almost surely, 2^228378501149 is an apocalyptic number.

It is an amenable number.

228378501149 is a deficient number, since it is larger than the sum of its proper divisors (1).

228378501149 is an equidigital number, since it uses as much as digits as its factorization.

228378501149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 228378501149 in words is "two hundred twenty-eight billion, three hundred seventy-eight million, five hundred one thousand, one hundred forty-nine".