2938963691 has 2 divisors, whose sum is σ = 2938963692. Its totient is φ = 2938963690.

The previous prime is 2938963679. The next prime is 2938963693. The reversal of 2938963691 is 1963698392.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2938963691 is a prime.

It is a Sophie Germain prime.

Together with 2938963693, 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 (2938963693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1469481845 + 1469481846.

It is an arithmetic number, because the mean of its divisors is an integer number (1469481846).

Almost surely, 2^2938963691 is an apocalyptic number.

2938963691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2938963691 is an equidigital number, since it uses as much as digits as its factorization.

2938963691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 56.

The square root of 2938963691 is about 54212.2097963180. The cubic root of 2938963691 is about 1432.4014112642.

The spelling of 2938963691 in words is "two billion, nine hundred thirty-eight million, nine hundred sixty-three thousand, six hundred ninety-one".