138012463 has 2 divisors, whose sum is σ = 138012464. Its totient is φ = 138012462.

The previous prime is 138012451. The next prime is 138012491. The reversal of 138012463 is 364210831.

It is an a-pointer prime, because the next prime (138012491) can be obtained adding 138012463 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138012463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138012493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69006231 + 69006232.

It is an arithmetic number, because the mean of its divisors is an integer number (69006232).

Almost surely, 2^138012463 is an apocalyptic number.

138012463 is a deficient number, since it is larger than the sum of its proper divisors (1).

138012463 is an equidigital number, since it uses as much as digits as its factorization.

138012463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 138012463 is about 11747.8705730017. The cubic root of 138012463 is about 516.7804813895.

The spelling of 138012463 in words is "one hundred thirty-eight million, twelve thousand, four hundred sixty-three".