138948527 has 2 divisors, whose sum is σ = 138948528. Its totient is φ = 138948526.

The previous prime is 138948493. The next prime is 138948533. The reversal of 138948527 is 725849831.

It is a happy number.

138948527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138948527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138948547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69474263 + 69474264.

It is an arithmetic number, because the mean of its divisors is an integer number (69474264).

Almost surely, 2^138948527 is an apocalyptic number.

138948527 is a deficient number, since it is larger than the sum of its proper divisors (1).

138948527 is an equidigital number, since it uses as much as digits as its factorization.

138948527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 138948527 is about 11787.6429789844. The cubic root of 138948527 is about 517.9461975097.

The spelling of 138948527 in words is "one hundred thirty-eight million, nine hundred forty-eight thousand, five hundred twenty-seven".