138194302 has 4 divisors (see below), whose sum is σ = 207291456. Its totient is φ = 69097150.

The previous prime is 138194299. The next prime is 138194333. The reversal of 138194302 is 203491831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 203491831 = 1871 ⋅108761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34548574 + ... + 34548577.

It is an arithmetic number, because the mean of its divisors is an integer number (51822864).

Almost surely, 2^138194302 is an apocalyptic number.

138194302 is a deficient number, since it is larger than the sum of its proper divisors (69097154).

138194302 is an equidigital number, since it uses as much as digits as its factorization.

138194302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69097153.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 138194302 is about 11755.6072578153. The cubic root of 138194302 is about 517.0073440064.

The spelling of 138194302 in words is "one hundred thirty-eight million, one hundred ninety-four thousand, three hundred two".