228137633 has 2 divisors, whose sum is σ = 228137634. Its totient is φ = 228137632.

The previous prime is 228137627. The next prime is 228137647. The reversal of 228137633 is 336731822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223592209 + 4545424 = 14953^2 + 2132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228137633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228137593 and 228137602.

It is not a weakly prime, because it can be changed into another prime (228137033) 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, 114068816 + 114068817.

It is an arithmetic number, because the mean of its divisors is an integer number (114068817).

Almost surely, 2^228137633 is an apocalyptic number.

It is an amenable number.

228137633 is a deficient number, since it is larger than the sum of its proper divisors (1).

228137633 is an equidigital number, since it uses as much as digits as its factorization.

228137633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 228137633 is about 15104.2256670112. The cubic root of 228137633 is about 611.0343759873.

The spelling of 228137633 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, six hundred thirty-three".