138194760 has 64 divisors (see below), whose sum is σ = 452278080. Its totient is φ = 33501440.

The previous prime is 138194753. The next prime is 138194761. The reversal of 138194760 is 67491831.

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 not an unprimeable number, because it can be changed into a prime (138194761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51027 + ... + 53666.

It is an arithmetic number, because the mean of its divisors is an integer number (7066845).

Almost surely, 2^138194760 is an apocalyptic number.

138194760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138194760 is an abundant number, since it is smaller than the sum of its proper divisors (314083320).

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

138194760 is a wasteful number, since it uses less digits than its factorization.

138194760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104718 (or 104714 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 138194760 is about 11755.6267378647. The cubic root of 138194760 is about 517.0079151565.

It can be divided in two parts, 1381 and 94760, that added together give a triangular number (96141 = T₄₃₈).

The spelling of 138194760 in words is "one hundred thirty-eight million, one hundred ninety-four thousand, seven hundred sixty".