138330654 has 32 divisors (see below), whose sum is σ = 344929536. Its totient is φ = 35929920.

The previous prime is 138330641. The next prime is 138330677. The reversal of 138330654 is 456033831.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 149247 + ... + 150170.

It is an arithmetic number, because the mean of its divisors is an integer number (10779048).

Almost surely, 2^138330654 is an apocalyptic number.

138330654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138330654 is an abundant number, since it is smaller than the sum of its proper divisors (206598882).

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

138330654 is a wasteful number, since it uses less digits than its factorization.

138330654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299440.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 138330654 is about 11761.4052731806. The cubic root of 138330654 is about 517.1773264441.

The spelling of 138330654 in words is "one hundred thirty-eight million, three hundred thirty thousand, six hundred fifty-four".