138194299 has 2 divisors, whose sum is σ = 138194300. Its totient is φ = 138194298.

The previous prime is 138194291. The next prime is 138194333. The reversal of 138194299 is 992491831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138194299 - 2³ = 138194291 is a prime.

It is a super-2 number, since 2×138194299² = 38195328552202802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138194291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69097149 + 69097150.

It is an arithmetic number, because the mean of its divisors is an integer number (69097150).

Almost surely, 2^138194299 is an apocalyptic number.

138194299 is a deficient number, since it is larger than the sum of its proper divisors (1).

138194299 is an equidigital number, since it uses as much as digits as its factorization.

138194299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 138194299 is about 11755.6071302166. The cubic root of 138194299 is about 517.0073402652.

The spelling of 138194299 in words is "one hundred thirty-eight million, one hundred ninety-four thousand, two hundred ninety-nine".