228938877901 has 2 divisors, whose sum is σ = 228938877902. Its totient is φ = 228938877900.

The previous prime is 228938877887. The next prime is 228938877907. The reversal of 228938877901 is 109778839822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169456545801 + 59482332100 = 411651^2 + 243890^2 .

It is a cyclic number.

It is not a de Polignac number, because 228938877901 - 2⁹ = 228938877389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228938877907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114469438950 + 114469438951.

It is an arithmetic number, because the mean of its divisors is an integer number (114469438951).

Almost surely, 2^228938877901 is an apocalyptic number.

It is an amenable number.

228938877901 is a deficient number, since it is larger than the sum of its proper divisors (1).

228938877901 is an equidigital number, since it uses as much as digits as its factorization.

228938877901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 228938877901 in words is "two hundred twenty-eight billion, nine hundred thirty-eight million, eight hundred seventy-seven thousand, nine hundred one".