2113309643 has 2 divisors, whose sum is σ = 2113309644. Its totient is φ = 2113309642.

The previous prime is 2113309633. The next prime is 2113309657. The reversal of 2113309643 is 3469033112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113309643 - 2¹⁸ = 2113047499 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113309603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056654821 + 1056654822.

It is an arithmetic number, because the mean of its divisors is an integer number (1056654822).

Almost surely, 2^2113309643 is an apocalyptic number.

2113309643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113309643 is an equidigital number, since it uses as much as digits as its factorization.

2113309643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 2113309643 is about 45970.7476880679. The cubic root of 2113309643 is about 1283.2788744792.

The spelling of 2113309643 in words is "two billion, one hundred thirteen million, three hundred nine thousand, six hundred forty-three".