201864349 has 2 divisors, whose sum is σ = 201864350. Its totient is φ = 201864348.

The previous prime is 201864337. The next prime is 201864373. The reversal of 201864349 is 943468102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101002500 + 100861849 = 10050^2 + 10043^2 .

It is a cyclic number.

It is not a de Polignac number, because 201864349 - 2¹³ = 201856157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201864049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100932174 + 100932175.

It is an arithmetic number, because the mean of its divisors is an integer number (100932175).

Almost surely, 2^201864349 is an apocalyptic number.

It is an amenable number.

201864349 is a deficient number, since it is larger than the sum of its proper divisors (1).

201864349 is an equidigital number, since it uses as much as digits as its factorization.

201864349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 201864349 is about 14207.8974165779. The cubic root of 201864349 is about 586.6150602778.

The spelling of 201864349 in words is "two hundred one million, eight hundred sixty-four thousand, three hundred forty-nine".