138141684 has 36 divisors (see below), whose sum is σ = 349964160. Its totient is φ = 45945360.

The previous prime is 138141629. The next prime is 138141701. The reversal of 138141684 is 486141831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13239 + ... + 21249.

Almost surely, 2^138141684 is an apocalyptic number.

It is an amenable number.

138141684 is an abundant number, since it is smaller than the sum of its proper divisors (211822476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138141684 is a wasteful number, since it uses less digits than its factorization.

138141684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500 (or 8495 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 138141684 is about 11753.3690489153. The cubic root of 138141684 is about 516.9417181800.

The spelling of 138141684 in words is "one hundred thirty-eight million, one hundred forty-one thousand, six hundred eighty-four".