20146349 has 2 divisors, whose sum is σ = 20146350. Its totient is φ = 20146348.

The previous prime is 20146339. The next prime is 20146363. The reversal of 20146349 is 94364102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10843849 + 9302500 = 3293^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146349 - 2¹² = 20142253 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20146319) 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, 10073174 + 10073175.

It is an arithmetic number, because the mean of its divisors is an integer number (10073175).

Almost surely, 2^20146349 is an apocalyptic number.

It is an amenable number.

20146349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146349 is an equidigital number, since it uses as much as digits as its factorization.

20146349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20146349 is about 4488.4684470318. The cubic root of 20146349 is about 272.1022404358.

The spelling of 20146349 in words is "twenty million, one hundred forty-six thousand, three hundred forty-nine".