138503194 has 8 divisors (see below), whose sum is σ = 216787680. Its totient is φ = 66240636.

The previous prime is 138503177. The next prime is 138503203. The reversal of 138503194 is 491305831.

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, 1505424 + ... + 1505515.

It is an arithmetic number, because the mean of its divisors is an integer number (27098460).

Almost surely, 2^138503194 is an apocalyptic number.

138503194 is a deficient number, since it is larger than the sum of its proper divisors (78284486).

138503194 is a wasteful number, since it uses less digits than its factorization.

138503194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010964.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 138503194 is about 11768.7379952143. The cubic root of 138503194 is about 517.3922624171.

The spelling of 138503194 in words is "one hundred thirty-eight million, five hundred three thousand, one hundred ninety-four".