138541699 has 2 divisors, whose sum is σ = 138541700. Its totient is φ = 138541698.

The previous prime is 138541693. The next prime is 138541703. The reversal of 138541699 is 996145831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138541699 is a prime.

It is not a weakly prime, because it can be changed into another prime (138541693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69270849 + 69270850.

It is an arithmetic number, because the mean of its divisors is an integer number (69270850).

Almost surely, 2^138541699 is an apocalyptic number.

138541699 is a deficient number, since it is larger than the sum of its proper divisors (1).

138541699 is an equidigital number, since it uses as much as digits as its factorization.

138541699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 138541699 is about 11770.3737833596. The cubic root of 138541699 is about 517.4402043756.

The spelling of 138541699 in words is "one hundred thirty-eight million, five hundred forty-one thousand, six hundred ninety-nine".