20086806149 has 2 divisors, whose sum is σ = 20086806150. Its totient is φ = 20086806148.

The previous prime is 20086806121. The next prime is 20086806193. The reversal of 20086806149 is 94160868002.

It is a happy number.

It is an a-pointer prime, because the next prime (20086806193) can be obtained adding 20086806149 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19425390625 + 661415524 = 139375^2 + 25718^2 .

It is a cyclic number.

It is not a de Polignac number, because 20086806149 - 2¹² = 20086802053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20086806199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10043403074 + 10043403075.

It is an arithmetic number, because the mean of its divisors is an integer number (10043403075).

Almost surely, 2^20086806149 is an apocalyptic number.

It is an amenable number.

20086806149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20086806149 is an equidigital number, since it uses as much as digits as its factorization.

20086806149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 20086806149 in words is "twenty billion, eighty-six million, eight hundred six thousand, one hundred forty-nine".