138358554 has 8 divisors (see below), whose sum is σ = 276717120. Its totient is φ = 46119516.

The previous prime is 138358541. The next prime is 138358573. The reversal of 138358554 is 455853831.

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

138358554 is an admirable number.

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, 11529874 + ... + 11529885.

It is an arithmetic number, because the mean of its divisors is an integer number (34589640).

Almost surely, 2^138358554 is an apocalyptic number.

138358554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138358554 is a wasteful number, since it uses less digits than its factorization.

138358554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23059764.

The product of its digits is 288000, while the sum is 42.

The square root of 138358554 is about 11762.5912961388. The cubic root of 138358554 is about 517.2120940511.

The spelling of 138358554 in words is "one hundred thirty-eight million, three hundred fifty-eight thousand, five hundred fifty-four".