201894664258739 has 2 divisors, whose sum is σ = 201894664258740. Its totient is φ = 201894664258738.

The previous prime is 201894664258733. The next prime is 201894664258741. The reversal of 201894664258739 is 937852466498102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201894664258739 - 2⁴ = 201894664258723 is a prime.

It is a super-2 number, since 2×201894664258739² (a number of 29 digits) contains 22 as substring.

Together with 201894664258741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201894664258733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100947332129369 + 100947332129370.

It is an arithmetic number, because the mean of its divisors is an integer number (100947332129370).

It is a 1-persistent number, because it is pandigital, but 2⋅201894664258739 = 403789328517478 is not.

Almost surely, 2^{201894664258739} is an apocalyptic number.

201894664258739 is a deficient number, since it is larger than the sum of its proper divisors (1).

201894664258739 is an equidigital number, since it uses as much as digits as its factorization.

201894664258739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1254113280, while the sum is 74.

The spelling of 201894664258739 in words is "two hundred one trillion, eight hundred ninety-four billion, six hundred sixty-four million, two hundred fifty-eight thousand, seven hundred thirty-nine".