138182500 has 60 divisors (see below), whose sum is σ = 312100096. Its totient is φ = 53460000.

The previous prime is 138182483. The next prime is 138182533. The reversal of 138182500 is 5281831.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76609 + ... + 78391.

Almost surely, 2^138182500 is an apocalyptic number.

138182500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138182500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156050048).

138182500 is an abundant number, since it is smaller than the sum of its proper divisors (173917596).

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

138182500 is a wasteful number, since it uses less digits than its factorization.

138182500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 138182500 is about 11755.1052738799. The cubic root of 138182500 is about 516.9926258540.

The spelling of 138182500 in words is "one hundred thirty-eight million, one hundred eighty-two thousand, five hundred".