201374209 has 2 divisors, whose sum is σ = 201374210. Its totient is φ = 201374208.

The previous prime is 201374191. The next prime is 201374213. The reversal of 201374209 is 902473102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127757809 + 73616400 = 11303^2 + 8580^2 .

It is a cyclic number.

It is not a de Polignac number, because 201374209 - 2¹⁹ = 200849921 is a prime.

It is not a weakly prime, because it can be changed into another prime (201374219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100687104 + 100687105.

It is an arithmetic number, because the mean of its divisors is an integer number (100687105).

Almost surely, 2^201374209 is an apocalyptic number.

It is an amenable number.

201374209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201374209 is an equidigital number, since it uses as much as digits as its factorization.

201374209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 201374209 is about 14190.6380758583. The cubic root of 201374209 is about 586.1398954287.

The spelling of 201374209 in words is "two hundred one million, three hundred seventy-four thousand, two hundred nine".