228299815369489 has 2 divisors, whose sum is σ = 228299815369490. Its totient is φ = 228299815369488.

The previous prime is 228299815369477. The next prime is 228299815369499. The reversal of 228299815369489 is 984963518992822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120657219110464 + 107642596259025 = 10984408^2 + 10375095^2 .

It is a cyclic number.

It is not a de Polignac number, because 228299815369489 - 2⁴⁷ = 87562327014161 is a prime.

It is a super-2 number, since 2×228299815369489² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228299815369469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114149907684744 + 114149907684745.

It is an arithmetic number, because the mean of its divisors is an integer number (114149907684745).

Almost surely, 2^{228299815369489} is an apocalyptic number.

It is an amenable number.

228299815369489 is a deficient number, since it is larger than the sum of its proper divisors (1).

228299815369489 is an equidigital number, since it uses as much as digits as its factorization.

228299815369489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9674588160, while the sum is 85.

The spelling of 228299815369489 in words is "two hundred twenty-eight trillion, two hundred ninety-nine billion, eight hundred fifteen million, three hundred sixty-nine thousand, four hundred eighty-nine".