1906941264161 has 2 divisors, whose sum is σ = 1906941264162. Its totient is φ = 1906941264160.

The previous prime is 1906941264149. The next prime is 1906941264187. The reversal of 1906941264161 is 1614621496091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1678175157136 + 228766107025 = 1295444^2 + 478295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1906941264161 - 2³⁴ = 1889761394977 is a prime.

It is a super-3 number, since 3×1906941264161³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1906941264121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953470632080 + 953470632081.

It is an arithmetic number, because the mean of its divisors is an integer number (953470632081).

Almost surely, 2^{1906941264161} is an apocalyptic number.

It is an amenable number.

1906941264161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906941264161 is an equidigital number, since it uses as much as digits as its factorization.

1906941264161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 1906941264161 in words is "one trillion, nine hundred six billion, nine hundred forty-one million, two hundred sixty-four thousand, one hundred sixty-one".