138235654 has 16 divisors (see below), whose sum is σ = 210931776. Its totient is φ = 67935400.

The previous prime is 138235633. The next prime is 138235661. The reversal of 138235654 is 456532831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25569 + ... + 30499.

It is an arithmetic number, because the mean of its divisors is an integer number (13183236).

Almost surely, 2^138235654 is an apocalyptic number.

138235654 is a deficient number, since it is larger than the sum of its proper divisors (72696122).

138235654 is a wasteful number, since it uses less digits than its factorization.

138235654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

The product of its digits is 86400, while the sum is 37.

The square root of 138235654 is about 11757.3659465035. The cubic root of 138235654 is about 517.0589070479.

The spelling of 138235654 in words is "one hundred thirty-eight million, two hundred thirty-five thousand, six hundred fifty-four".