201946184980009 has 2 divisors, whose sum is σ = 201946184980010. Its totient is φ = 201946184980008.

The previous prime is 201946184979977. The next prime is 201946184980037. The reversal of 201946184980009 is 900089481649102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174615821635984 + 27330363344025 = 13214228^2 + 5227845^2 .

It is a cyclic number.

It is not a de Polignac number, because 201946184980009 - 2⁵ = 201946184979977 is a prime.

It is not a weakly prime, because it can be changed into another prime (201946184980609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100973092490004 + 100973092490005.

It is an arithmetic number, because the mean of its divisors is an integer number (100973092490005).

Almost surely, 2^{201946184980009} is an apocalyptic number.

It is an amenable number.

201946184980009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201946184980009 is an equidigital number, since it uses as much as digits as its factorization.

201946184980009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 201946184980009 in words is "two hundred one trillion, nine hundred forty-six billion, one hundred eighty-four million, nine hundred eighty thousand, nine".