138159400 has 48 divisors (see below), whose sum is σ = 322345440. Its totient is φ = 55070400.

The previous prime is 138159377. The next prime is 138159403. The reversal of 138159400 is 4951831.

138159400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×138159400³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138159403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65157 + ... + 67243.

It is an arithmetic number, because the mean of its divisors is an integer number (6715530).

Almost surely, 2^138159400 is an apocalyptic number.

138159400 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 138159400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161172720).

138159400 is an abundant number, since it is smaller than the sum of its proper divisors (184186040).

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

138159400 is a wasteful number, since it uses less digits than its factorization.

138159400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 138159400 is about 11754.1226810001. The cubic root of 138159400 is about 516.9638156569.

The spelling of 138159400 in words is "one hundred thirty-eight million, one hundred fifty-nine thousand, four hundred".