2906438427691 has 2 divisors, whose sum is σ = 2906438427692. Its totient is φ = 2906438427690.

The previous prime is 2906438427671. The next prime is 2906438427709. The reversal of 2906438427691 is 1967248346092.

It is a happy number.

2906438427691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2906438427691 - 2³⁵ = 2872078689323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2906438427601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453219213845 + 1453219213846.

It is an arithmetic number, because the mean of its divisors is an integer number (1453219213846).

Almost surely, 2^{2906438427691} is an apocalyptic number.

2906438427691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2906438427691 is an equidigital number, since it uses as much as digits as its factorization.

2906438427691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 2906438427691 in words is "two trillion, nine hundred six billion, four hundred thirty-eight million, four hundred twenty-seven thousand, six hundred ninety-one".