138660350 has 12 divisors (see below), whose sum is σ = 257908344. Its totient is φ = 55464120.

The previous prime is 138660343. The next prime is 138660367. The reversal of 138660350 is 53066831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1386554 + ... + 1386653.

It is an arithmetic number, because the mean of its divisors is an integer number (21492362).

Almost surely, 2^138660350 is an apocalyptic number.

138660350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138660350 is a deficient number, since it is larger than the sum of its proper divisors (119247994).

138660350 is a wasteful number, since it uses less digits than its factorization.

138660350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773219 (or 2773214 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 138660350 is about 11775.4129439268. The cubic root of 138660350 is about 517.5878789981.

The spelling of 138660350 in words is "one hundred thirty-eight million, six hundred sixty thousand, three hundred fifty".