28731414169 has 2 divisors, whose sum is σ = 28731414170. Its totient is φ = 28731414168.

The previous prime is 28731414149. The next prime is 28731414191. The reversal of 28731414169 is 96141413782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28716691600 + 14722569 = 169460^2 + 3837^2 .

It is a cyclic number.

It is not a de Polignac number, because 28731414169 - 2¹⁵ = 28731381401 is a prime.

It is a super-2 number, since 2×28731414169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28731414149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14365707084 + 14365707085.

It is an arithmetic number, because the mean of its divisors is an integer number (14365707085).

Almost surely, 2^28731414169 is an apocalyptic number.

It is an amenable number.

28731414169 is a deficient number, since it is larger than the sum of its proper divisors (1).

28731414169 is an equidigital number, since it uses as much as digits as its factorization.

28731414169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The spelling of 28731414169 in words is "twenty-eight billion, seven hundred thirty-one million, four hundred fourteen thousand, one hundred sixty-nine".