28948160869 has 2 divisors, whose sum is σ = 28948160870. Its totient is φ = 28948160868.

The previous prime is 28948160867. The next prime is 28948160887. The reversal of 28948160869 is 96806184982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26006400225 + 2941760644 = 161265^2 + 54238^2 .

It is a cyclic number.

It is not a de Polignac number, because 28948160869 - 2¹ = 28948160867 is a prime.

It is a super-2 number, since 2×28948160869² (a number of 22 digits) contains 22 as substring.

Together with 28948160867, 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 (28948160867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14474080434 + 14474080435.

It is an arithmetic number, because the mean of its divisors is an integer number (14474080435).

Almost surely, 2^28948160869 is an apocalyptic number.

It is an amenable number.

28948160869 is a deficient number, since it is larger than the sum of its proper divisors (1).

28948160869 is an equidigital number, since it uses as much as digits as its factorization.

28948160869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 28948160869 in words is "twenty-eight billion, nine hundred forty-eight million, one hundred sixty thousand, eight hundred sixty-nine".