2146834386391 has 2 divisors, whose sum is σ = 2146834386392. Its totient is φ = 2146834386390.

The previous prime is 2146834386353. The next prime is 2146834386413. The reversal of 2146834386391 is 1936834386412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2146834386391 - 2³³ = 2138244451799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2146834386091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073417193195 + 1073417193196.

It is an arithmetic number, because the mean of its divisors is an integer number (1073417193196).

Almost surely, 2^{2146834386391} is an apocalyptic number.

2146834386391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146834386391 is an equidigital number, since it uses as much as digits as its factorization.

2146834386391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17915904, while the sum is 58.

The spelling of 2146834386391 in words is "two trillion, one hundred forty-six billion, eight hundred thirty-four million, three hundred eighty-six thousand, three hundred ninety-one".