138750168 has 32 divisors (see below), whose sum is σ = 361958400. Its totient is φ = 44239008.

The previous prime is 138750137. The next prime is 138750169. The reversal of 138750168 is 861057831.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138750169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125128 + ... + 126231.

It is an arithmetic number, because the mean of its divisors is an integer number (11311200).

Almost surely, 2^138750168 is an apocalyptic number.

It is an amenable number.

138750168 is an abundant number, since it is smaller than the sum of its proper divisors (223208232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138750168 is a wasteful number, since it uses less digits than its factorization.

138750168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251391 (or 251387 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 138750168 is about 11779.2261205904. The cubic root of 138750168 is about 517.6996116695.

The spelling of 138750168 in words is "one hundred thirty-eight million, seven hundred fifty thousand, one hundred sixty-eight".