138683157 has 16 divisors (see below), whose sum is σ = 187741440. Its totient is φ = 91046592.

The previous prime is 138683143. The next prime is 138683159. The reversal of 138683157 is 751386831.

It is not a de Polignac number, because 138683157 - 2¹⁰ = 138682133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138683159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179023 + ... + 179795.

It is an arithmetic number, because the mean of its divisors is an integer number (11733840).

Almost surely, 2^138683157 is an apocalyptic number.

It is an amenable number.

138683157 is a deficient number, since it is larger than the sum of its proper divisors (49058283).

138683157 is an equidigital number, since it uses as much as digits as its factorization.

138683157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its digits is 120960, while the sum is 42.

The square root of 138683157 is about 11776.3813202528. The cubic root of 138683157 is about 517.6162552417.

The spelling of 138683157 in words is "one hundred thirty-eight million, six hundred eighty-three thousand, one hundred fifty-seven".