201209947903 has 2 divisors, whose sum is σ = 201209947904. Its totient is φ = 201209947902.

The previous prime is 201209947901. The next prime is 201209948021. The reversal of 201209947903 is 309749902102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201209947903 - 2¹ = 201209947901 is a prime.

Together with 201209947901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201209947901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100604973951 + 100604973952.

It is an arithmetic number, because the mean of its divisors is an integer number (100604973952).

Almost surely, 2^201209947903 is an apocalyptic number.

201209947903 is a deficient number, since it is larger than the sum of its proper divisors (1).

201209947903 is an equidigital number, since it uses as much as digits as its factorization.

201209947903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 201209947903 in words is "two hundred one billion, two hundred nine million, nine hundred forty-seven thousand, nine hundred three".