228508619 has 2 divisors, whose sum is σ = 228508620. Its totient is φ = 228508618.

The previous prime is 228508613. The next prime is 228508639. The reversal of 228508619 is 916805822.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228508619 is a prime.

It is a super-2 number, since 2×228508619² = 104432377914574322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228508613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114254309 + 114254310.

It is an arithmetic number, because the mean of its divisors is an integer number (114254310).

Almost surely, 2^228508619 is an apocalyptic number.

228508619 is a deficient number, since it is larger than the sum of its proper divisors (1).

228508619 is an equidigital number, since it uses as much as digits as its factorization.

228508619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 228508619 is about 15116.5015463235. The cubic root of 228508619 is about 611.3654077892.

The spelling of 228508619 in words is "two hundred twenty-eight million, five hundred eight thousand, six hundred nineteen".