138854506 has 16 divisors (see below), whose sum is σ = 240349824. Its totient is φ = 58930704.

The previous prime is 138854491. The next prime is 138854531. The reversal of 138854506 is 605458831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46705 + ... + 49588.

It is an arithmetic number, because the mean of its divisors is an integer number (15021864).

Almost surely, 2^138854506 is an apocalyptic number.

138854506 is a deficient number, since it is larger than the sum of its proper divisors (101495318).

138854506 is a wasteful number, since it uses less digits than its factorization.

138854506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96405.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 138854506 is about 11783.6541870508. The cubic root of 138854506 is about 517.8293465468.

The spelling of 138854506 in words is "one hundred thirty-eight million, eight hundred fifty-four thousand, five hundred six".