138587147 has 2 divisors, whose sum is σ = 138587148. Its totient is φ = 138587146.

The previous prime is 138587131. The next prime is 138587153. The reversal of 138587147 is 741785831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138587147 - 2⁴ = 138587131 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 138587098 and 138587107.

It is not a weakly prime, because it can be changed into another prime (138587747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69293573 + 69293574.

It is an arithmetic number, because the mean of its divisors is an integer number (69293574).

Almost surely, 2^138587147 is an apocalyptic number.

138587147 is a deficient number, since it is larger than the sum of its proper divisors (1).

138587147 is an equidigital number, since it uses as much as digits as its factorization.

138587147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 44.

The square root of 138587147 is about 11772.3042349406. The cubic root of 138587147 is about 517.4967795236.

The spelling of 138587147 in words is "one hundred thirty-eight million, five hundred eighty-seven thousand, one hundred forty-seven".