138683156 has 24 divisors (see below), whose sum is σ = 249189696. Its totient is φ = 67494080.

The previous prime is 138683143. The next prime is 138683159. The reversal of 138683156 is 651386831.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 7 ways as a sum of consecutive naturals, for example, 105455 + ... + 106761.

It is an arithmetic number, because the mean of its divisors is an integer number (10382904).

Almost surely, 2^138683156 is an apocalyptic number.

It is an amenable number.

138683156 is a deficient number, since it is larger than the sum of its proper divisors (110506540).

138683156 is a wasteful number, since it uses less digits than its factorization.

138683156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1997 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 138683156 is about 11776.3812777950. The cubic root of 138683156 is about 517.6162539976.

The spelling of 138683156 in words is "one hundred thirty-eight million, six hundred eighty-three thousand, one hundred fifty-six".