138031774 has 8 divisors (see below), whose sum is σ = 207555120. Its totient is φ = 68846736.

The previous prime is 138031771. The next prime is 138031781. The reversal of 138031774 is 477130831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138031771) 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 3 ways as a sum of consecutive naturals, for example, 83554 + ... + 85189.

It is an arithmetic number, because the mean of its divisors is an integer number (25944390).

Almost surely, 2^138031774 is an apocalyptic number.

138031774 is a deficient number, since it is larger than the sum of its proper divisors (69523346).

138031774 is a wasteful number, since it uses less digits than its factorization.

138031774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169154.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 138031774 is about 11748.6924378843. The cubic root of 138031774 is about 516.8045832767.

The spelling of 138031774 in words is "one hundred thirty-eight million, thirty-one thousand, seven hundred seventy-four".