228901693 has 2 divisors, whose sum is σ = 228901694. Its totient is φ = 228901692.

The previous prime is 228901691. The next prime is 228901711. The reversal of 228901693 is 396109822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131721529 + 97180164 = 11477^2 + 9858^2 .

It is a cyclic number.

It is not a de Polignac number, because 228901693 - 2¹ = 228901691 is a prime.

Together with 228901691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228901691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114450846 + 114450847.

It is an arithmetic number, because the mean of its divisors is an integer number (114450847).

Almost surely, 2^228901693 is an apocalyptic number.

It is an amenable number.

228901693 is a deficient number, since it is larger than the sum of its proper divisors (1).

228901693 is an equidigital number, since it uses as much as digits as its factorization.

228901693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 228901693 is about 15129.4974470403. The cubic root of 228901693 is about 611.7157580829.

The spelling of 228901693 in words is "two hundred twenty-eight million, nine hundred one thousand, six hundred ninety-three".