138078063 has 12 divisors (see below), whose sum is σ = 211178448. Its totient is φ = 86637120.

The previous prime is 138078049. The next prime is 138078067. The reversal of 138078063 is 360870831.

It is not a de Polignac number, because 138078063 - 2¹² = 138073967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138078067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451083 + ... + 451388.

It is an arithmetic number, because the mean of its divisors is an integer number (17598204).

Almost surely, 2^138078063 is an apocalyptic number.

138078063 is a deficient number, since it is larger than the sum of its proper divisors (73100385).

138078063 is a wasteful number, since it uses less digits than its factorization.

138078063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902494 (or 902491 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 138078063 is about 11750.6622366571. The cubic root of 138078063 is about 516.8623470148.

The spelling of 138078063 in words is "one hundred thirty-eight million, seventy-eight thousand, sixty-three".