28174013869 has 2 divisors, whose sum is σ = 28174013870. Its totient is φ = 28174013868.

The previous prime is 28174013849. The next prime is 28174013891. The reversal of 28174013869 is 96831047182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26191538244 + 1982475625 = 161838^2 + 44525^2 .

It is a cyclic number.

It is not a de Polignac number, because 28174013869 - 2⁵ = 28174013837 is a prime.

It is a super-2 number, since 2×28174013869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28174013849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14087006934 + 14087006935.

It is an arithmetic number, because the mean of its divisors is an integer number (14087006935).

Almost surely, 2^28174013869 is an apocalyptic number.

It is an amenable number.

28174013869 is a deficient number, since it is larger than the sum of its proper divisors (1).

28174013869 is an equidigital number, since it uses as much as digits as its factorization.

28174013869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 28174013869 in words is "twenty-eight billion, one hundred seventy-four million, thirteen thousand, eight hundred sixty-nine".