138030554 has 8 divisors (see below), whose sum is σ = 217943040. Its totient is φ = 65382876.

The previous prime is 138030511. The next prime is 138030583. The reversal of 138030554 is 455030831.

138030554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×138030554⁴ (a number of 34 digits) contains 4444 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816154 + ... + 1816229.

It is an arithmetic number, because the mean of its divisors is an integer number (27242880).

Almost surely, 2^138030554 is an apocalyptic number.

138030554 is a deficient number, since it is larger than the sum of its proper divisors (79912486).

138030554 is a wasteful number, since it uses less digits than its factorization.

138030554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632404.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 138030554 is about 11748.6405170981. The cubic root of 138030554 is about 516.8030606721.

The spelling of 138030554 in words is "one hundred thirty-eight million, thirty thousand, five hundred fifty-four".