2138965463 has 2 divisors, whose sum is σ = 2138965464. Its totient is φ = 2138965462.

The previous prime is 2138965459. The next prime is 2138965471. The reversal of 2138965463 is 3645698312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2138965463 - 2² = 2138965459 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138965453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069482731 + 1069482732.

It is an arithmetic number, because the mean of its divisors is an integer number (1069482732).

Almost surely, 2^2138965463 is an apocalyptic number.

2138965463 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138965463 is an equidigital number, since it uses as much as digits as its factorization.

2138965463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 2138965463 is about 46248.9509394538. The cubic root of 2138965463 is about 1288.4510509475.

The spelling of 2138965463 in words is "two billion, one hundred thirty-eight million, nine hundred sixty-five thousand, four hundred sixty-three".