138167930 has 16 divisors (see below), whose sum is σ = 256725504. Its totient is φ = 53484240.

The previous prime is 138167819. The next prime is 138167933. The reversal of 138167930 is 39761831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138167933) 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, 222542 + ... + 223161.

It is an arithmetic number, because the mean of its divisors is an integer number (16045344).

Almost surely, 2^138167930 is an apocalyptic number.

138167930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138167930 is a deficient number, since it is larger than the sum of its proper divisors (118557574).

138167930 is a wasteful number, since it uses less digits than its factorization.

138167930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445741.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 138167930 is about 11754.4855268106. The cubic root of 138167930 is about 516.9744546014.

The spelling of 138167930 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, nine hundred thirty".