28091614349 has 2 divisors, whose sum is σ = 28091614350. Its totient is φ = 28091614348.

The previous prime is 28091614307. The next prime is 28091614357. The reversal of 28091614349 is 94341619082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14639790025 + 13451824324 = 120995^2 + 115982^2 .

It is a cyclic number.

It is not a de Polignac number, because 28091614349 - 2²⁸ = 27823178893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28091614049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14045807174 + 14045807175.

It is an arithmetic number, because the mean of its divisors is an integer number (14045807175).

Almost surely, 2^28091614349 is an apocalyptic number.

It is an amenable number.

28091614349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28091614349 is an equidigital number, since it uses as much as digits as its factorization.

28091614349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 28091614349 in words is "twenty-eight billion, ninety-one million, six hundred fourteen thousand, three hundred forty-nine".