138456154 has 16 divisors (see below), whose sum is σ = 218851200. Its totient is φ = 65513664.

The previous prime is 138456119. The next prime is 138456161. The reversal of 138456154 is 451654831.

It is a happy number.

138456154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 55359 + ... + 57805.

It is an arithmetic number, because the mean of its divisors is an integer number (13678200).

Almost surely, 2^138456154 is an apocalyptic number.

138456154 is a deficient number, since it is larger than the sum of its proper divisors (80395046).

138456154 is a wasteful number, since it uses less digits than its factorization.

138456154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957.

The product of its digits is 57600, while the sum is 37.

The square root of 138456154 is about 11766.7393104462. The cubic root of 138456154 is about 517.3336816071. Note that the first 3 decimals are identical.

The spelling of 138456154 in words is "one hundred thirty-eight million, four hundred fifty-six thousand, one hundred fifty-four".