228485737 has 2 divisors, whose sum is σ = 228485738. Its totient is φ = 228485736.

The previous prime is 228485707. The next prime is 228485783. The reversal of 228485737 is 737584822.

It is an a-pointer prime, because the next prime (228485783) can be obtained adding 228485737 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216796176 + 11689561 = 14724^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 228485737 - 2¹⁵ = 228452969 is a prime.

It is not a weakly prime, because it can be changed into another prime (228485707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114242868 + 114242869.

It is an arithmetic number, because the mean of its divisors is an integer number (114242869).

Almost surely, 2^228485737 is an apocalyptic number.

It is an amenable number.

228485737 is a deficient number, since it is larger than the sum of its proper divisors (1).

228485737 is an equidigital number, since it uses as much as digits as its factorization.

228485737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The square root of 228485737 is about 15115.7446723607. The cubic root of 228485737 is about 611.3450004915.

The spelling of 228485737 in words is "two hundred twenty-eight million, four hundred eighty-five thousand, seven hundred thirty-seven".