138330670 has 16 divisors (see below), whose sum is σ = 251324208. Its totient is φ = 54814720.

The previous prime is 138330641. The next prime is 138330677. The reversal of 138330670 is 76033831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138330677) by changing a digit.

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, 63571 + ... + 65710.

It is an arithmetic number, because the mean of its divisors is an integer number (15707763).

Almost surely, 2^138330670 is an apocalyptic number.

138330670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138330670 is a deficient number, since it is larger than the sum of its proper divisors (112993538).

138330670 is a wasteful number, since it uses less digits than its factorization.

138330670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129395.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 138330670 is about 11761.4059533714. The cubic root of 138330670 is about 517.1773463838.

The spelling of 138330670 in words is "one hundred thirty-eight million, three hundred thirty thousand, six hundred seventy".