228148957 has 2 divisors, whose sum is σ = 228148958. Its totient is φ = 228148956.

The previous prime is 228148913. The next prime is 228148997. The reversal of 228148957 is 759841822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185885956 + 42263001 = 13634^2 + 6501^2 .

It is a cyclic number.

It is not a de Polignac number, because 228148957 - 2¹⁹ = 227624669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228148997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114074478 + 114074479.

It is an arithmetic number, because the mean of its divisors is an integer number (114074479).

Almost surely, 2^228148957 is an apocalyptic number.

It is an amenable number.

228148957 is a deficient number, since it is larger than the sum of its proper divisors (1).

228148957 is an equidigital number, since it uses as much as digits as its factorization.

228148957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 228148957 is about 15104.6005243436. The cubic root of 228148957 is about 611.0444857307.

The spelling of 228148957 in words is "two hundred twenty-eight million, one hundred forty-eight thousand, nine hundred fifty-seven".