1228617073 has 2 divisors, whose sum is σ = 1228617074. Its totient is φ = 1228617072.

The previous prime is 1228617053. The next prime is 1228617107. The reversal of 1228617073 is 3707168221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1105695504 + 122921569 = 33252^2 + 11087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228617073 - 2⁵ = 1228617041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228617053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614308536 + 614308537.

It is an arithmetic number, because the mean of its divisors is an integer number (614308537).

Almost surely, 2^1228617073 is an apocalyptic number.

It is an amenable number.

1228617073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228617073 is an equidigital number, since it uses as much as digits as its factorization.

1228617073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1228617073 is about 35051.6343841482. The cubic root of 1228617073 is about 1071.0395675975.

The spelling of 1228617073 in words is "one billion, two hundred twenty-eight million, six hundred seventeen thousand, seventy-three".