138950194 has 8 divisors (see below), whose sum is σ = 215612460. Its totient is φ = 67079376.

The previous prime is 138950167. The next prime is 138950209. The reversal of 138950194 is 491059831.

It can be written as a sum of positive squares in 2 ways, for example, as 125148969 + 13801225 = 11187^2 + 3715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197789 + ... + 1197904.

Almost surely, 2^138950194 is an apocalyptic number.

138950194 is a deficient number, since it is larger than the sum of its proper divisors (76662266).

138950194 is a wasteful number, since it uses less digits than its factorization.

138950194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395724.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 138950194 is about 11787.7136884130. The cubic root of 138950194 is about 517.9482688112.

The spelling of 138950194 in words is "one hundred thirty-eight million, nine hundred fifty thousand, one hundred ninety-four".