138114649 has 2 divisors, whose sum is σ = 138114650. Its totient is φ = 138114648.

The previous prime is 138114619. The next prime is 138114677. The reversal of 138114649 is 946411831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 19740249 = 10880^2 + 4443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138114649 is a prime.

It is not a weakly prime, because it can be changed into another prime (138114619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69057324 + 69057325.

It is an arithmetic number, because the mean of its divisors is an integer number (69057325).

Almost surely, 2^138114649 is an apocalyptic number.

It is an amenable number.

138114649 is a deficient number, since it is larger than the sum of its proper divisors (1).

138114649 is an equidigital number, since it uses as much as digits as its factorization.

138114649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 138114649 is about 11752.2188968722. The cubic root of 138114649 is about 516.9079933096.

The spelling of 138114649 in words is "one hundred thirty-eight million, one hundred fourteen thousand, six hundred forty-nine".