138184450 has 24 divisors (see below), whose sum is σ = 258460020. Its totient is φ = 54964800.

The previous prime is 138184447. The next prime is 138184451. The reversal of 138184450 is 54481831.

It can be written as a sum of positive squares in 6 ways, for example, as 10517049 + 127667401 = 3243^2 + 11299^2 .

It is not an unprimeable number, because it can be changed into a prime (138184451) 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, 1416 + ... + 16684.

Almost surely, 2^138184450 is an apocalyptic number.

138184450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138184450 is a deficient number, since it is larger than the sum of its proper divisors (120275570).

138184450 is a wasteful number, since it uses less digits than its factorization.

138184450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462 (or 15457 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 138184450 is about 11755.1882162728. The cubic root of 138184450 is about 516.9950577367.

The spelling of 138184450 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, four hundred fifty".